List of companies in Bihar: industrial areas, Patna, contacts

The quick answer

No government office publishes a list of companies in Bihar with the phone numbers and emails a supplier needs. The closest official list is of places, not companies: the Bihar Industrial Area Development Authority (BIADA) says it runs 94+ industrial areas, estates, growth centres and mega industrial parks, grouped into 10 clusters, from Bihta and Fatuha near Patna to Bela in Darbhanga and Barari in Bhagalpur. For contacts, Starleads' Bihar Business Directory had 28,539 businesses on 13 November 2026, 98% of them with a mobile number, and more than half of them (16,433) are in Patna. Each list costs ₹499 plus 18% GST, and you can download 60 rows free before you decide.

This guide is for businesses that sell to companies in Bihar: FMCG brands and distributors looking for retailers, building material and steel suppliers, software and compliance vendors, recruiters, transporters and anyone who needs factories in Bihar's industrial areas. It explains what kind of economy Bihar has, where its industrial areas are, what Starleads' Bihar and Patna lists hold and where they fall short, which free registers to check, and how to reach these businesses within TRAI's rules. If you are looking for a job in a Bihar company, apply through the company's careers page; this guide is about selling to businesses.

Companies in Bihar: what kind of economy you are selling into

A list of companies only makes sense once you know what the state's businesses do. Bihar is not a factory state like Gujarat or Maharashtra. Its businesses are mostly traders, retailers, contractors, service firms and food processors, with a small number of large plants. These facts come from two national sources, both read on 13 November 2026:

• Size. The India Brand Equity Foundation's Bihar state page (IBEF is a trust set up by the Ministry of Commerce) says Bihar's GSDP at current prices is projected at ₹11.07 trillion in 2025-26, having grown at 11.52% a year since 2015-16.
• What people work in. The same page says about 80% of the population works in agriculture, and that food processing, dairy, sugar, manufacturing and healthcare are among the fastest-growing industries. Its key industries list is food and beverages, rubber and plastics, transport equipment, chemicals, tobacco, textile, leather and dairy.
• Exports. IBEF puts Bihar's merchandise exports at ₹16,864.75 crore in FY26, led by petroleum products, meat, dairy and poultry products, rice and engineering goods. Invest India's Bihar page adds that Bihar has a share of about 90% of global foxnut (makhana) production.
• Investment. IBEF cites DPIIT figures of US$ 218.01 million of cumulative FDI into Bihar between October 2019 and March 2026, small for a state of its size, which tells you that most of Bihar's companies are home-grown and owner-run.
• State policies. Invest India lists the policies an investor or supplier will hear about: the Bihar Industrial Investment Promotion Policy 2016 and the Industrial Investment Promotion Package 2025, the Export Promotion Policy 2024, the IT Policy 2024, the Purchase Preference Policy 2024, the Startup Policy 2022, the Logistics Policy 2023 and the Bio-Fuels Production Promotion Policy 2023. IBEF adds a Semiconductor Policy 2026.

For a sales plan, this means three different markets inside one state: a very large number of shops and distributors spread across north and south Bihar, a professional and services hub in Patna, and a few hundred factories in BIADA's industrial areas. Each needs a different list.

Industrial areas in Bihar: BIADA's 10 clusters

BIADA was set up under the Bihar Industrial Area Development Act, 1974. Its About BIADA page (read on 13 November 2026) says that after a restructuring in 2022 its industrial areas (IA), industrial estates (IE), industrial growth centres (IGC) and mega industrial parks (MIP) were divided into 10 clusters under a South and a North zone; that there are "94+" of them today; and that more than 10 more are set to join. The page lists them cluster by cluster. We have shortened the list below and added, for each cluster's main city, how many contacts Starleads' Bihar Business Directory holds there, so you can see where the data is thick and where it is thin.

BIADA cluster	Industrial areas named on BIADA's page (selection)	Starleads' directory rows in the main city
Patna	Patliputra, Fatuha, Bihta, Mega Industrial Park Bihta, New Bihta, Sikandarpur, Kopakala; Biharsharif (Nalanda), Buxar, Bihiya and Gidha (Bhojpur)	Patna 16,433
Hajipur	Hajipur and the E.P.I.P. at Hajipur (Vaishali), Goraul phases I and II, Siwan and New Siwan, Hathua (Gopalganj)	Included in the state list; search the City column
Muzaffarpur	Industrial Area and Industrial Estate Muzaffarpur, Mahbal, Bariyarpur, Damodarpur, Korra, Panapur, Dumaria; Kumarbagh, Ramnagar and Bettiah (West Champaran), Raxaul and Sugauli (East Champaran), Sitamarhi	Muzaffarpur 968
Darbhanga	Bela and Dharampur estates, Donar; Pandaul, Jhanjharpur, Sakri and Lohat (Madhubani); Samastipur	Darbhanga 2,311
Begusarai	Growth Centre Begusarai, Barauni; Jamalpur, Munger and Sitakund (Munger); Khagaria	Included in the state list
Bhagalpur	Large Industrial Estate Barari, Kahalgaon growth centre; Lakhisarai	Bhagalpur 362
Gaya	Gaya, Guraru; Nawada and Warisaliganj; Jehanabad; Aurangabad and Barun; Dehri and Bikramganj (Rohtas)	Gaya 355
Purnea	Purnea City estate, Maranga growth centre, Banmankhi; Katihar; Khagra and Bhediadangi (Kishanganj); Forbesganj (Araria)	Included in the state list
Saharsa	Saharsa, Supaul; Murliganj and the Udakishanganj mini growth centre (Madhepura)	Included in the state list

BIADA's page names nine cluster headings in its list although it speaks of 10 clusters; we have copied the headings as they appear. Two newer projects matter if you sell to factories:

• Gaya. Invest India describes an Integrated Manufacturing Cluster being developed by the Government of India at Gaya under the Amritsar Kolkata Industrial Corridor, on about 1,670 acres, for textiles, food processing, engineering, fabrication and defence products. The Eastern Dedicated Freight Corridor also passes through Kaimur, Rohtas, Aurangabad and Gaya.
• New land. A report by Indian Masterminds dated 26 October 2026, quoting the state Industries Department, says BIADA allotted 727 acres to 521 industrial units in 2025-26 so far, and that land acquisition is under way for about 14,600 acres for 28 new industrial areas in 25 districts. That is a news report, not a BIADA notice, but it shows where new buyers of construction, machinery and services will appear.

BIADA's site also has pages for available plots and plug-and-play sheds with rates. For a supplier, the useful habit is to watch allotments: a unit that has just been given land will soon need civil contractors, steel, electrical work, machinery, packaging and staff.

What Starleads' data shows for Bihar

The figures below are counts of contacts in Starleads' data as shown on the list pages on 13 November 2026. They are not an official census of Bihar's businesses, and the lists overlap: one firm can appear in more than one. The Bihar page shows 39 statewide lists with 74,712 contacts in all, 95% of them with a mobile number.

Bihar list	Rows	Mobile / email	Where they are
Bihar Business Directory	28,539	98% / 41%	370 cities and towns; Patna 16,433, Darbhanga 2,311, Muzaffarpur 968, Bhagalpur 362, Gaya 355
Grocery & Supermarkets in Bihar	11,230	100% / 1%	34 towns; Motihari 989, Samastipur 617, Sitamarhi 521, Bhojpur 469, Saharsa 452
Civil Engineers & Contractors in Bihar	3,174	85% / 96%	26 towns; Patna 2,365, Muzaffarpur 119, Bhagalpur 83
Company Secretaries in Bihar	2,301	98% / 97%	21 towns; Patna 1,858, Muzaffarpur 106, Bhagalpur 55
Business Owners & Proprietors in Bihar	2,245	100% / none	61 towns; Patna 934, Muzaffarpur 144, Bhagalpur 86, Gaya 74, Darbhanga 69
Steel, Metals & Minerals in Bihar	949	96% / 98%	15 towns; Patna 622, Muzaffarpur 74, Bhagalpur 29
Energy, Power & Petroleum in Bihar	885	94% / 93%	11 towns; Patna 580, Muzaffarpur 39, Bhagalpur 34, Begusarai 26, Barauni 19
Exporters in Bihar	431	89% / 95%	5 towns; Patna 322, Bhagalpur 25, Muzaffarpur 18

What the numbers say:

• Bihar is a retail state in the data. Its grocery and supermarket list is the third largest of the 19 states that have one in Starleads' data, after Uttar Pradesh (92,134) and Maharashtra (29,689). And the grocery list is not a Patna list: its biggest towns are Motihari, Samastipur and Sitamarhi in north Bihar. For an FMCG brand or a food distributor, this is the most useful Bihar list we hold.
• Everything else is a Patna list. For contractors, company secretaries, steel traders, energy firms and exporters, Patna holds between 65% and 81% of the state's rows. If your buyers are offices and professional firms, start in Patna and treat the rest of the state as a second campaign.
• Bihar is small in the national picture. The Bihar directory is 18th of 30 states in Starleads' data, far behind Maharashtra (11,30,630) and Delhi (9,85,771), and neighbouring West Bengal has 1,81,398 business listings in our published figures. Expect fewer rows per industry than in a western or southern state.
• The owners list is the decision-maker list. Every one of the 2,245 rows in the owners list is a named person with a mobile; none has an email. In small Bihar firms the owner usually decides everything, so this list suits phone and WhatsApp-led selling.

For comparison, these are the biggest city directories in Starleads' data across India:

• Mumbai 5,77,978 contacts · 41% email · 76% mobile ₹499
• Hyderabad 4,09,205 contacts · 36% email · 89% mobile ₹499
• Bengaluru 3,39,403 contacts · 34% email · 98% mobile ₹499
• Chennai 2,97,138 contacts · 39% email · 79% mobile ₹499
• New Delhi 2,92,834 contacts · 44% email · 96% mobile ₹499
• Pune 2,48,520 contacts · 41% email · 89% mobile ₹499
• Ahmedabad 1,56,718 contacts · 47% email · 98% mobile ₹499
• Kolkata 1,48,354 contacts · 33% email · 75% mobile ₹499
• Surat 70,801 contacts · 44% email · 89% mobile ₹499
• Kolar 1,392 contacts · 16% email · 100% mobile ₹499
• Baddi 1,247 contacts · 36% email · 99% mobile ₹499
• Kota-Rajasthan 1,144 contacts · 16% email · 100% mobile ₹499

Where the Bihar lists fall short

• No factory list for Bihar alone. Starleads has no ready-made "manufacturing companies in Bihar" list. The steel list is 943 rows of "Steel & Steel Products" businesses, which in practice means mostly merchants and traders, and the energy list is 837 rows of oil, gas and petroleum businesses. Units in Bihta, Hajipur or Barari appear inside the directory and the owners list; filter by address and PIN code.
• The exporters list is mostly one trade. Of the 431 rows, 392 carry the category "Paper Importers & Exporters". Bihar is last of the 19 states with an exporters list in our data. If you want makhana, rice or leather exporters, the list will not give you many; ask us for a custom list or use the export promotion councils.
• Emails are thin in the big lists. The directory has an email for 41% of rows and a contact name for 24%; the grocery list has almost no emails. Plan calls, WhatsApp and visits, not email campaigns.
• Town names vary. Districts and towns can appear under different names (Bhojpur and Arrah, Motihari and East Champaran). Search the City and Address columns for both.

Starleads does not promise that every number still works: contact details change, which is why the sample is free.

Companies in Patna: the state's office market

Patna is where most searches for "companies in Bihar" end up, and where most of Starleads' Bihar data sits. The Patna page shows 35 lists with 41,835 contacts across 34 industries, 94% of them with a mobile number. The biggest are listed below.

Patna list	Rows	Mobile / email	Who it suits
Patna Business Directory	16,433	98% / not shown on the city page	Wide outreach to every kind of business in the city
IT & Networking Professionals in Patna	3,118	97% / 97%	Recruiters, training institutes, IT hardware sellers
Civil Engineers & Contractors in Patna	2,365	83% / 96%	Cement, steel, tiles, waterproofing and equipment hire
Company Secretaries in Patna	1,858	97% / 97%	Compliance software, legal publishers, outsourcing tie-ups
Sales & Business Development Professionals in Patna	1,765	97% / 98%	Recruiters and sales-training firms
Doctors & Clinics in Patna	1,745	93% / 34%	Medical devices, lab and pharmacy suppliers
Stock Brokers & Broking Firms in Patna	1,071	93% / 98%	Trading software, research and back-office services
Business Owners & Proprietors in Patna	934	100% / none	Calling the person who decides in small firms

Patna's lists also include electronics and appliance stores (716), coaching and tuition centres (711), tour and travel agents (697), advertising and media agencies (632), steel and metal businesses (622), BPO and call centres (586) and energy and petroleum firms (580). The pattern is the same as in the state data: Patna is a city of offices, professionals, shops and service firms. Invest India notes a Software Technology Park of India centre in Patna, and the IT professionals list is the largest professional list we hold for the city.

One thing Patna's lists do not show is the factory belt on its edge. BIADA's Patna cluster includes Fatuha to the east and Bihta to the west, and those units sit in the directory under their own town names or under Patna with a Bihta or Fatuha address. Search the Address column for "Bihta", "Fatuha" and "Patliputra Industrial Area" to pull them out.

Free and official sources for companies in Bihar

A contact list tells you whom to call. These free sources tell you who exists, where, and whether they are real. Use them before you give credit or sign a supply contract:

Source	What it tells you	Limits
BIADA	The industrial areas by cluster, available plots and sheds with rates, land allotment notices	Names places and allotments, not a contact list of units
Bihar Chamber of Commerce & Industries members directory	A searchable table of member firms with what each deals in and its business category	Members only; mostly Patna; no phone numbers in the table
MCA company master data	Legal name, CIN, status, registered office and directors of every registered company	Only companies and LLPs, not proprietorships, which are most of Bihar's shops
GST taxpayer search	Whether a GSTIN is active, the legal and trade name, the type of registration	One look-up at a time; no bulk download
Udyam registration	Whether a unit is a registered micro, small or medium enterprise	Checks a number you already have; not a directory
IBEF and Invest India	The state's economy, policies, corridors and exports	Background for a plan, not a list of buyers

The Bihar Chamber is worth knowing for its own sake. Its history page says it was formally inaugurated on 9 September 1926 (first registered as the Bihar & Orissa Chamber of Commerce), so 2026 is its centenary year. Its directory, which runs to dozens of pages of 20 firms each, is a quick way to see which Patna traders and manufacturers are organised and active.

Two codes help you spot a Bihar firm in official records. A Bihar company's CIN carries the state code "BR" (the Chamber's own CIN is U91110BR1926NPL000023), and a Bihar GSTIN starts with "10" (the Chamber's GSTIN begins 10AAATT). If a "Patna" supplier shows a GSTIN from another state, ask why before you pay. Our company search guide walks through the MCA, GST and Udyam checks, and the MSME database guide explains what Udyam data can and cannot give you.

Who sells to Bihar's companies, and which list fits

You sell	Who decides	Start with
FMCG, packaged food, household goods	Shop owner	Grocery & Supermarkets in Bihar, sorted by town into beats
Cement, steel, tiles, construction chemicals	Contractor, builder	Civil Engineers & Contractors in Bihar; add BIADA allottees as they are announced
Accounting, compliance and ERP software	Practising CS or CA, owner	Company Secretaries in Bihar
Billing software, loans, insurance for businesses	Owner	Business Owners & Proprietors in Bihar
Machinery, electrical work, packaging for new units	Owner or plant head	The directory filtered to Bihta, Fatuha, Hajipur, Bela, Barauni and Barari addresses; BIADA allotment notices
Appliances and electronics (looking for dealers)	Shop owner	Electronics & Appliance Stores in Bihar (1,039 rows)

For these buyer groups across India, see our guides to the retailers database, the contractors list and the businessman directory. If you are appointing distributors rather than selling direct, our guide on how distribution works in India explains the margins and terms.

How to build a list of companies in Bihar, step by step

1. Choose one of Bihar's three markets. Shops across the state, offices and professionals in Patna, or units in the industrial areas. A single "all companies in Bihar" list mixes them and wastes calls.
2. Download the free sample. Each list gives 60 rows free. Check that the businesses are the kind you sell to and that the towns match your route. If they do not, stop: it costs nothing.
3. Buy one list and cut it by town and PIN code. For the grocery list, group towns into beats (Motihari, Sitamarhi and Bettiah in the north-west; Samastipur and Darbhanga; Saharsa and Supaul). For Patna, split by PIN code so a day of calls matches a day of visits.
4. Add the industrial areas by hand. Use BIADA's cluster list to search the directory's address column for each estate name, and keep a sheet of new allotments from BIADA's notices.
5. Check numbers against DND and remove bad rows. Scrub the list against TRAI's registry before a promotional campaign (see the next section), and delete duplicates.
6. Make the first contact count. Call in Hindi (or Maithili or Bhojpuri if you can), say in one sentence what you sell and why it suits their trade, and ask how they want details: WhatsApp, a visit or a price list.
7. Check before credit. Run the GST and MCA checks above before you send goods on credit, and start new dealers with small orders.
8. Grow by cluster. Once an offer works in Patna, take it to the next BIADA cluster town on the same road: Hajipur across the Ganga, then Muzaffarpur; or Biharsharif and Gaya to the south.

Use the list builder to mix industries and towns, or keep only rows with a mobile or an email. For call targets and scripts, see our calling plan for B2B contact lists.

Calling, SMS and email within the rules

Almost every number in the Bihar lists is a mobile, and in small firms it is often the owner's personal phone. TRAI's rules on commercial communication apply whichever list the number came from:

• DND (NCPR). TRAI's customer preference registration page (read on 13 November 2026) lets anyone register preferences by SMS or call to 1909, IVR, an approved app or an OTP-based web portal. People can block categories (from "Banking/Insurance/Financial products/credit cards" to "Food and Beverages"), modes (voice calls and SMS, auto-dialer calls, robocalls), time bands and days. Check numbers before a promotional campaign; our DND check guide shows how.
• Registered senders and DLT. TRAI's 2025 amendment to the commercial communications regulations says promotional auto-dialer and robo calls should go through 140-series numbers. Send SMS only through a DLT-registered provider with an approved header and template; our DLT registration guide explains how.
• Complaints and penalties. Under the same amendment, a recipient must complain within seven days. Where complaints come from five or more different recipients in ten days and the sender is found to have sent unsolicited communication, all its outgoing telecom resources are barred for fifteen days the first time; a second time means disconnection for one year and blacklisting.
• Consent and the DPDP Act. A business number is still a person's number. Say who you are, stop when asked, and keep a record of who opted out. Our DPDP Act guide for B2B sales covers the data protection side.

Starleads sells lists of businesses and professionals only. We do not sell lists of private individuals such as investors, salaried people or voters.

Questions people ask

How many companies are there in Bihar?

There is no single official count of all businesses with contacts. The MCA register counts registered companies only, and most Bihar businesses are proprietorships that are not in it. Starleads' Bihar Business Directory had 28,539 businesses with contact details on 13 November 2026, and the 39 Bihar lists hold 74,712 contacts; those are counts in our data, not a census.

What are the major industrial areas in Bihar?

BIADA lists 94+ industrial areas, estates, growth centres and mega parks in clusters headed by Patna, Hajipur, Muzaffarpur, Darbhanga, Begusarai, Bhagalpur, Gaya, Purnea and Saharsa. Among the best known are Bihta and Fatuha near Patna, Hajipur with its export promotion industrial park (E.P.I.P.), Bela in Darbhanga, Barauni in Begusarai and Barari in Bhagalpur. A manufacturing cluster of about 1,670 acres is being developed at Gaya.

How many IT companies are there in Patna?

No official register counts IT companies by city. Starleads' Patna data has 3,118 IT and networking professionals, 400 website owners, 586 BPO and call centres and 345 telecom equipment and network companies. Invest India notes a Software Technology Park of India centre in Patna. For registered IT companies, use MCA data: every CIN carries an industry code and, for Bihar, the "BR" state code.

Which are the top manufacturing companies in Bihar?

We do not publish a ranking, because there is no official one for Bihar and lists found online are often old. IBEF names food and beverages, rubber and plastics, transport equipment, chemicals, tobacco, textile, leather and dairy as the key industries. To find manufacturers, start with BIADA's industrial areas and filter the directory by those addresses.

Is there a list of companies in Bihar as a PDF?

Each Starleads Bihar list has a free sample PDF and Excel file of 60 contacts. The full list comes as an Excel workbook, which is easier to sort and filter than a PDF. Be careful with free PDFs on file-sharing sites: they rarely say when they were made or where the data came from.

Where can I find companies in Patna with contact details?

The Patna Business Directory has 16,433 businesses, 98% with a mobile number, and the Patna page has 35 lists by industry. The Bihar Chamber's members directory lists member firms and what they deal in, without phone numbers.

Can I call these numbers for sales?

Yes, for B2B purposes, if you follow TRAI's rules: check DND preferences before promotional calls, use registered headers and DLT templates for SMS, use 140-series numbers for promotional auto-dialer calls, and stop contacting anyone who asks.