NAICS 221210 Quarterly Industry Report
Natural Gas Distribution
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 221210Sector: Utilities (22)Updated: Q1 2026
About This Report
This industry profile for Natural Gas Distribution (NAICS 221210) draws on data from the Bureau of Labor Statistics[6], U.S. Census Bureau, and SBA size standards database[7]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, utility analysts, and business brokers with current market data. The editorial analysis reflects the independent assessment of FairMarketValue.com's research team, with all quantitative claims sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the natural gas distribution industry.
Industry Definition & Overview
Natural Gas Distribution (NAICS 221210) encompasses establishments primarily engaged in operating gas distribution systems of mains, meters, and service connections, as well as gas marketers buying gas from wells and selling to distribution systems, and gas brokers arranging sales through systems operated by others per the U.S. Census Bureau[5]. Distribution utilities receive natural gas from interstate transmission pipelines and deliver it through local networks to residential, commercial, and industrial customers for heating, cooking, water heating, and industrial process applications.
About 1,877 establishments employ roughly 92,596 workers, generating approximately $8.16 billion in annual payroll and $97.2 billion in total revenue per the Bureau of Labor Statistics[6]. NiSource serves 3.3 million customers across six states, making it the largest pure-play gas distribution company. Atmos Energy serves three million customers in nine states, and Enbridge Gas Utah (formerly Questar) serves over 900,000 customers. Southern Company Gas rounds out the top operators. Many gas distribution systems are owned by combination electric and gas utilities.
Per the SBA Table of Size Standards[7], the size standard is 1,150 employees. State public utility commissions regulate retail gas rates, service quality, and safety standards. Pipeline safety falls under the Pipeline and Hazardous Materials Safety Administration (PHMSA), which sets integrity management requirements for distribution mains and service lines. Leak-prone pipe replacement programs represent a major capital investment category, with utilities replacing vintage cast iron and bare steel mains with modern polyethylene and coated steel. Natural gas serves about 69 million residential customers and 5.5 million commercial customers, making distribution infrastructure among the most widespread utility systems in the country.
What's Included in This Industry
- Local gas distribution main operations
- Customer service line maintenance
- Gas meter installation and reading
- Pressure regulation and odorization
- Leak detection and repair programs
- Pipeline integrity management
- Customer billing and service operations
- Gas marketing and brokerage services
- Emergency response and damage prevention
- Vintage pipe replacement programs
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Utilities | 22 |
| Subsector | Utilities | 221 |
| Industry Group | Natural Gas Distribution | 2212 |
| NAICS Industry | Natural Gas Distribution | 22121 |
| National Industry | Natural Gas Distribution | 221210 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 221122 | Electric Power Distribution | Electric Power Distribution shares regulated utility characteristics with gas distribution, both operating under state commission oversight with similar rate recovery mechanisms and customer service obligations |
| 486210 | Pipeline Transportation of Natural Gas | Pipeline Transportation of Natural Gas moves gas through interstate transmission lines to city gate stations where local distribution utilities receive supply for delivery to retail customers |
| 237120 | Oil and Gas Pipeline and Related Structures Construction | Oil and Gas Pipeline Construction builds new distribution mains and service connections that gas utilities need to serve growing customer counts and replace aging pipe infrastructure |
| 221112 | Fossil Fuel Electric Power Generation | Fossil Fuel Electric Power Generation consumes roughly 40 percent of U.S. natural gas production for electricity generation, with gas distribution serving the remaining residential and commercial demand |
| 213112 | Support Activities for Oil and Gas Operations | Support Activities for Oil and Gas provide upstream exploration and production services that maintain natural gas supply flowing into the pipeline system that feeds distribution networks |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Texas | 10.5% | 255 |
| 2 | Pennsylvania | 8.1% | 196 |
| 3 | California | 7.6% | 183 |
| 4 | Ohio | 6.1% | 148 |
| 5 | Illinois | 3.8% | 91 |
| 6 | New York | 3.6% | 87 |
| 7 | Wisconsin | 3.0% | 73 |
| 8 | Indiana | 3.0% | 72 |
| 9 | Kansas | 2.8% | 68 |
| 10 | Oklahoma | 2.8% | 68 |
% Of Establishments
0%
11%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
40
Total SBA Loans
$23.0M
Total Loan Volume
$574K
Average Loan Size
9 yrs
Average Loan Term
8.50%
Average Interest Rate
112
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: Per the SBA Table of Size Standards[7], Natural Gas Distribution (NAICS 221210) has a size standard of 1,150 employees for federal contracting purposes. SBA 7(a) loans[8] support pipe replacement programs, metering upgrades, and working capital for qualifying operators. Small gas utilities and municipal gas systems represent the primary small business profile in this classification. Additionally, 504/CDC loans[9] provide long-term, fixed-rate financing for major fixed assets such as real estate and equipment.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Banc of California | 16 | $16.0M | $1.0M |
| 2 | Fifth Third Bank | 8 | $3.2M | $400K |
| 3 | U.S. Bank, National Association | 8 | $2.8M | $350K |
| 4 | Zions Bank, A Division of | 8 | $952K | $119K |
Frequently Asked Questions
Common questions about this industry.
What companies operate gas distribution systems?
NiSource serves 3.3 million customers, Atmos Energy serves three million, and Southern Company Gas operates in multiple states. About 1,877 establishments employ roughly 92,596 workers per the U.S. Census Bureau[5]. Many combination utilities operate both gas and electric distribution.
How many customers does gas distribution serve?
Natural gas distribution serves about 69 million residential customers and 5.5 million commercial customers nationwide per the Bureau of Labor Statistics[6]. Total industry revenue reaches roughly $97.2 billion annually across all customer classes.
What is the SBA size standard for Gas Distribution?
Per the SBA Table of Size Standards[7], NAICS 221210 has a size standard of 1,150 employees. This determines eligibility for SBA loans, federal contracting set-asides, and small business programs.
What NAICS codes are related to gas distribution?
Related codes include NAICS 221122 (Electric Distribution), NAICS 486210 (Pipeline Transportation), NAICS 237120 (Pipeline Construction), NAICS 238220 (Plumbing), and NAICS 213112 (Oil and Gas Support) per the U.S. Census Bureau[5].
How is gas distribution regulated?
State public utility commissions set retail rates and service standards. PHMSA regulates pipeline safety and integrity management under federal pipeline safety laws. Distribution utilities must maintain leak detection, damage prevention, and emergency response programs.
What activities are included in NAICS 221210?
Core activities include main operations, service line maintenance, meter installation, pressure regulation, leak detection, pipeline integrity management, customer billing, gas marketing, emergency response, and pipe replacement per the U.S. Census Bureau[5].
Can gas distribution businesses get SBA loans?
Yes, firms meeting the 1,150-employee standard qualify for SBA 7(a) loans[8] covering pipe replacement, metering upgrades, and working capital. Small municipal gas systems and independent utilities are the most common qualified applicants.
What is leak-prone pipe replacement?
Utilities are replacing vintage cast iron and bare steel distribution mains installed before the 1970s with modern polyethylene and coated steel pipe per the Bureau of Labor Statistics[6]. These programs reduce methane leaks and improve system safety, with costs recovered through state-approved surcharges on customer bills.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Bureau of Labor Statistics bls.gov
- [7]SBA Table of Size Standards sba.gov
- [8]SBA 7(a) loans sba.gov
- [9]504/CDC loans sba.gov
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