NAICS 561110 Quarterly Industry Report
Office Administrative Services
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 561110Sector: Administrative and Support and Waste Management and Remediation Services (56)Updated: Q1 2026
About This Report
This industry profile for Office Administrative Services (NAICS 561110) draws on data from the Bureau of Labor Statistics[5], U.S. Census Bureau, and SBA size standards database[7]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, business brokers, and lenders with current industry structure 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 office administrative services industry.
Share of Administrative and Support and Waste Management and Remediation Services
8.3%
By establishment count, 2022 Census[2]
NAICS Sector
56
Administrative and Support and Waste Management and Remediation Services
Industry Definition & Overview
Office Administrative Services (NAICS 561110) encompasses establishments providing a range of day-to-day office administrative services on a contract or fee basis. These services include financial planning, billing and recordkeeping, payroll processing, personnel management, and physical distribution logistics. Unlike facilities support services, office administrative services establishments do not provide operating staff to carry out the complete operations of a client's business. They focus instead on backend administrative functions.
Per the Bureau of Labor Statistics[5], this subsector groups establishments supporting the day-to-day operations of other organizations. Firms in this sector specialize in one or more administrative activities and can serve clients in multiple industries, allowing operational efficiency by outsourcing non-core functions. Most establishments are small businesses. Revenue models include per-transaction fees, monthly retainers, and hourly billing.
Office and administrative support occupations totaled about 16.8 million workers in 2023, with an average annual wage of $45,346 per BLS occupational data[6]. Secretaries and administrative assistants held about 3.5 million positions. Cloud-based software, AI-powered document processing, and remote work infrastructure are reshaping how administrative support gets delivered. Outsourced administrative providers increasingly compete with in-house shared services centers and offshore operations, putting pressure on domestic pricing while expanding the total addressable market for firms that can deliver specialized expertise or industry-specific compliance knowledge.
What's Included in This Industry
- Billing and recordkeeping services for clients
- Payroll processing and employee administration
- Personnel and human resources management
- Secretarial and stenographic services
- Bookkeeping and financial planning services
- Mail room and mail distribution services
- Reception and telephone answering services
- Data entry and document preparation
- Medical office management (excluding full operation)
- Business records and file management
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Administrative and Support and Waste Management and Remediation Services | 56 |
| Subsector | Administrative and Support Services | 561 |
| Industry Group | Office Administrative Services | 5611 |
| NAICS Industry | Office Administrative Services | 56111 |
| National Industry | Office Administrative Services | 561110 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 561210 | Facilities Support Services | Facilities Support Services provides on-site operating staff for janitorial, maintenance, and security functions, whereas Office Administrative Services focuses on backend functions performed off-site or remotely |
| 561311 | Employment Placement Agencies | Employment Placement Agencies connect employers with job candidates and specialize in recruitment services, while Office Administrative Services provide ongoing support functions like payroll and personnel management |
| 561320 | Temporary Help Services | Temporary Help Services supply temporary employees to client organizations for project work, while Office Administrative Services provide specialized administrative functions on a contract basis |
| 561330 | Professional Employer Organizations | Professional Employer Organizations assume employment liabilities and provide HR services, whereas Office Administrative Services do not assume employer status or employment relationships |
| 561410 | Document Preparation Services | Document Preparation Services focus specifically on document creation and processing, while Office Administrative Services include broader administrative functions including personnel, billing, and logistics |
| 541211 | Offices of Certified Public Accountants | Accounting Services provide specialized financial accounting and audit functions, while Office Administrative Services include general recordkeeping and billing as part of broader administrative support |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 13.4% | 5,011 |
| 2 | Texas | 12.2% | 4,549 |
| 3 | Florida | 9.3% | 3,477 |
| 4 | New York | 6.4% | 2,393 |
| 5 | Illinois | 3.5% | 1,297 |
| 6 | New Jersey | 3.0% | 1,122 |
| 7 | Georgia | 3.0% | 1,118 |
| 8 | Pennsylvania | 2.9% | 1,062 |
| 9 | Ohio | 2.9% | 1,061 |
| 10 | North Carolina | 2.6% | 981 |
% Of Establishments
0%
13%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
536
Total SBA Loans
$286.5M
Total Loan Volume
$535K
Average Loan Size
10 yrs
Average Loan Term
10.77%
Average Interest Rate
7,240
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA size standard for NAICS 561110 is $12.5 million in average annual receipts over the preceding five fiscal years per the SBA Table of Size Standards[7]. Businesses meeting this threshold qualify for SBA-backed financing programs. SBA 7(a) loans[8] can fund working capital, equipment purchases, and business expansion for qualifying providers. SBA 504 loans[9] support fixed asset financing including office equipment and real estate.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Newtek Bank, National Association | 24 | $50.4M | $2.1M |
| 2 | Provident Bank | 16 | $40.0M | $2.5M |
| 3 | Financial Resources Federal Credit Union | 8 | $27.6M | $3.5M |
| 4 | Readycap Lending, LLC | 40 | $24.5M | $612K |
| 5 | Northeast Bank | 88 | $21.7M | $247K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses operate in the Office Administrative Services industry?
Businesses in NAICS 561110 include specialized administrative service providers, payroll processing companies, medical office management firms, and business support centers. These establishments offer billing, recordkeeping, and personnel management for law firms, accounting firms, healthcare practices, and corporate offices. Payroll service bureaus, personnel consultants, and bookkeeping providers all fall under this classification per the U.S. Census Bureau[10].
How is the Office Administrative Services industry structured?
The industry operates on a service contract model where establishments specialize in specific administrative functions. Per BLS data[5], the subsector includes establishments that support day-to-day operations of other organizations. Service delivery models range from dedicated staff on specific tasks to full administrative support packages. Many providers bill on per-transaction, monthly retainer, or hourly fee structures. Niches include payroll processing, medical office management, and financial recordkeeping.
What is the SBA size standard for Office Administrative Services?
The SBA size standard for NAICS 561110 is $12.5 million in average annual receipts over the preceding five fiscal years, as stated in the SBA Table of Size Standards[7]. Businesses under this threshold qualify as small for SBA contracting and financing purposes. The standard reflects the competitive nature of the administrative services market.
What related NAICS codes apply to administrative services?
Related codes include NAICS 561210 (Facilities Support Services) for on-site facility management, NAICS 561311 (Employment Placement Agencies) for recruitment, NAICS 561320 (Temporary Help Services) for temporary employees, NAICS 561330 (Professional Employer Organizations) for HR responsibilities, and NAICS 561410 (Document Preparation Services). The U.S. Census Bureau[10] maintains the official classification structure.
What industries use Office Administrative Services most frequently?
Healthcare practices, law firms, accounting offices, real estate agencies, and small businesses across all sectors represent the primary client base. Corporate headquarters outsource payroll and HR administration. Insurance carriers, financial services firms, and educational institutions also rely heavily on outsourced administrative support. Industries with high administrative burden but limited back-office staff benefit most from contracted services.
What specific activities are included in this industry classification?
NAICS 561110 includes billing and invoice management, accounts receivable processing, payroll processing, employee personnel file management, data entry, bookkeeping, secretarial and stenographic services, reception and telephone services, and business records management. Medical office management services and hotel management services (excluding full operations) are included per BLS data[11].
Can Office Administrative Services businesses get SBA loans?
Which states have the highest concentration of office administrative services?
States with major corporate headquarters and professional services firms show higher concentrations. California, Texas, New York, Florida, and Illinois lead in establishment counts due to large business populations and diverse economies. Metropolitan areas with dense office environments, including New York City, Los Angeles, Chicago, and Dallas, generate the strongest demand per Bureau of Labor Statistics[6] occupational data.
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]Bureau of Labor Statistics bls.gov
- [6]BLS occupational data bls.gov
- [7]SBA size standards database sba.gov
- [8]SBA 7(a) loans sba.gov
- [9]SBA 504 loans sba.gov
- [10]U.S. Census Bureau census.gov
- [11]BLS data bls.gov
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