NAICS 561990 Quarterly Industry Report
All Other Support Services
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 561990Sector: Administrative and Support and Waste Management and Remediation Services (56)Updated: Q1 2026
About This Report
This industry profile for All Other Support Services (NAICS 561990) 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, business 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 all other support services industry.
Share of Administrative and Support and Waste Management and Remediation Services
2.7%
By establishment count, 2022 Census[2]
NAICS Sector
56
Administrative and Support and Waste Management and Remediation Services
Industry Definition & Overview
All Other Support Services (NAICS 561990) encompasses establishments primarily engaged in providing day-to-day business and organizational support services not classified in other specific administrative and support service categories per the U.S. Census Bureau[5]. This catch-all classification captures diverse activities including bartering services, traffic control flagging, bottle and container exchanges, float decorating, inventory taking, contract meter reading, lumber grading, and diving services provided on a contract or fee basis.
The Bureau of Labor Statistics[6] tracks employment and wage data across the broader administrative and support services sector. Because NAICS 561990 functions as a residual category, businesses within it vary dramatically in size, specialization, and operational model. Traffic flagging services are labor-intensive and seasonal, while bartering exchanges operate as membership-based networks with technology platforms. Inventory counting firms deploy teams of trained counters to retail and warehouse locations on scheduled cycles.
Per the SBA Table of Size Standards[7], the size standard is $16.5 million in average annual receipts. The diversity of activities within this classification means that competitive dynamics, margin structures, and growth drivers differ substantially across sub-segments. Firms typically build expertise in a single service niche rather than attempting to offer the full range of activities covered by this code. Regulatory requirements also vary by service type; notary public services require state licensing, while other activities within this classification may have minimal regulatory oversight.
What's Included in This Industry
- Bartering and trade exchange services
- Traffic control flagging for construction and events
- Bottle and container exchange and redemption
- Float decorating and parade preparation services
- Inventory taking and stocktaking services
- Contract meter reading for utilities
- Lumber grading and evaluation services
- Commercial diving services on contract basis
- Notary public services
- Lecture bureau and speaker booking services
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 | Other Support Services | 5619 |
| NAICS Industry | All Other Support Services | 56199 |
| National Industry | All Other Support Services | 561990 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 561110 | Office Administrative Services | Office Administrative Services provide clerical and administrative support functions while all other support services cover specialized contract activities like inventory taking and flagging that require field deployment |
| 561210 | Facilities Support Services | Facilities Support Services manage building operations including cleaning and maintenance while all other support services address non-facility operational needs like traffic control and meter reading |
| 561910 | Packaging and Labeling Services | Packaging and Labeling Services are explicitly excluded from this catch-all category and classified separately due to specialized equipment requirements and distinct operational processes |
| 561920 | Convention and Trade Show Organizers | Convention and Trade Show Organizers are excluded from this classification because event management requires specialized expertise and infrastructure distinct from general support services |
| 561320 | Temporary Help Services | Temporary Help Services provide personnel staffing across all industries while all other support services deliver specialized contract activities that require specific technical skills and equipment |
| 541690 | Other Scientific and Technical Consulting Services | Other Scientific and Technical Consulting provides professional advisory services while all other support services deliver operational execution like diving services and inventory counting |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 10.7% | 1,349 |
| 2 | Florida | 6.1% | 775 |
| 3 | New York | 5.4% | 686 |
| 4 | North Carolina | 5.4% | 686 |
| 5 | Texas | 5.3% | 668 |
| 6 | Pennsylvania | 4.3% | 551 |
| 7 | Ohio | 4.3% | 538 |
| 8 | Illinois | 3.9% | 499 |
| 9 | Michigan | 3.0% | 381 |
| 10 | Oklahoma | 2.9% | 370 |
% Of Establishments
0%
11%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
552
Total SBA Loans
$309.2M
Total Loan Volume
$560K
Average Loan Size
11 yrs
Average Loan Term
10.42%
Average Interest Rate
7,376
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], All Other Support Services (NAICS 561990) has a size standard of $16.5 million in average annual receipts for federal contracting purposes. SBA 7(a) loans[8] support equipment purchases, technology development, and working capital for qualifying firms. The diversity of businesses within this classification means financing needs vary from simple equipment loans for flagging operations to technology platform development for bartering exchanges. 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 | First-Citizens Bank & Trust Company | 8 | $40.0M | $5.0M |
| 1 | Pathward National Association | 8 | $40.0M | $5.0M |
| 3 | Meridian Bank | 16 | $28.2M | $1.8M |
| 4 | United Midwest Savings Bank National Association | 40 | $24.0M | $600K |
| 5 | Newtek Bank, National Association | 32 | $20.7M | $648K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses operate as other support services?
Firms specialize in specific niches rather than offering the full range of activities. Traffic flagging, inventory counting, bartering exchanges, commercial diving, and notary services each represent distinct business models per the U.S. Census Bureau[5].
How is the other support services industry structured?
This catch-all classification captures diverse activities with different market structures per the Bureau of Labor Statistics[6]. Some sub-segments like inventory counting are dominated by national firms, while others like flagging services are highly localized with thousands of small operators.
What is the SBA size standard for Other Support Services?
Per the SBA Table of Size Standards[7], NAICS 561990 has a size standard of $16.5 million in average annual receipts. This determines eligibility for SBA loans, federal contracting set-asides, and small business programs.
What NAICS codes are related to other support services?
Related codes include NAICS 561110 (Office Admin), NAICS 561210 (Facilities Support), NAICS 561910 (Packaging), NAICS 561920 (Convention Organizers), and NAICS 561320 (Temporary Help) per the U.S. Census Bureau[5]. Each handles specific support functions separated from this residual category.
Which industries hire other support services most?
Construction firms hire flagging services, retailers contract inventory counters, utilities use meter readers, and corporations engage bartering exchanges. Demand patterns vary entirely by sub-segment within this diverse classification.
What activities are included in NAICS 561990?
Activities include bartering exchanges, traffic flagging, bottle exchanges, float decorating, inventory taking, meter reading, lumber grading, commercial diving, notary services, and lecture bureaus per the U.S. Census Bureau[5].
Can other support services businesses get SBA loans?
Yes, firms meeting the $16.5 million size standard qualify for SBA 7(a) loans[8] covering equipment, technology platforms, and working capital. Financing needs vary dramatically across the diverse sub-segments within this classification.
What licensing requirements apply to other support services?
Requirements vary by activity type. Notary public services require state licensing in all jurisdictions. Traffic flagging requires certification in most states. Commercial diving requires professional credentials per the Bureau of Labor Statistics[6]. Other activities within this code may have minimal licensing requirements.
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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