Emergency and Other Relief Services (NAICS 62423): An Investor's Primer

1. Overview

NAICS 62423, Emergency and Other Relief Services, is the U.S. government's industry classification for the organizations that show up after a disaster or conflict — with food, shelter, clothing, medical relief, cash cards, and case managers — plus the agencies that receive and resettle refugees. NAICS (the North American Industry Classification System) is the official taxonomy the Census Bureau uses to count businesses.[1]

This is a rollup level: NAICS uses a nested hierarchy (sector → subsector → industry group → industry → national industry), and 62423 is a five-digit "NAICS industry" that sits one rung above the six-digit detail codes. What makes it unusual is that it contains exactly one child — 624230, also named Emergency and Other Relief Services. So this level is, for all practical purposes, identical to that one child. For the full treatment — scope, the investable edge, economics, regulation, and risks — read the 624230 primer; this page is a short overview plus this level's own ground-truth statistics.

The one-line investment takeaway carries over unchanged: the core is overwhelmingly nonprofit and government, not corporate — there is no publicly traded "pure play" in disaster relief. Investors get exposure only indirectly, through for-profit firms in adjacent industries (debris removal, recovery consulting, temporary housing, emergency medical services, catastrophe insurance) that ride the same disaster cycle — or directly, as private investors and philanthropists funding contractors and the nonprofit core.[8][22]

2. What's inside — and why this level equals its one child

A five-digit NAICS industry normally aggregates several six-digit national industries. Here there is only one, so no aggregation happens:

Because the mapping is one-to-one, every number, definition, and boundary at this level is simply the 624230 number. In particular, 62423 covers disaster relief (emergency response and short-term recovery after hurricanes, floods, wildfires, and human-caused emergencies) and refugee resettlement — and it excludes, by activity, general food banks (624210), homeless and domestic-violence shelters (624221), other community housing (624229), general crisis counseling (624110/624190), ambulance transport (621910), and disaster debris removal (562119/562910). Those excluded codes are exactly where much of the investable activity sits.[1][2] See the 624230 primer for the full exclusion table.

3. How big it is

Federal ground-truth statistics for NAICS 62423 (United States). Because the level equals its one child, these are the 624230 figures. Receipts and concentration are from the 2022 Economic Census; establishments, employment, and payroll are from 2023 County Business Patterns (CBP):

Our ground-truth file for this level provides receipts, firm and establishment counts, employment, payroll, and concentration ratios. It does not provide payer mix, margins, donor concentration, or a government-versus-private ownership split, so those are not estimated here.

The undercount caveat — important. These federal business statistics materially understate the true footprint of U.S. relief, and the reason is structural rather than a rounding issue. (1) The biggest multi-program charities are coded to their primary activity elsewhere — the American Red Cross (~$3.2 billion revenue, mostly blood/biomedical) and the Salvation Army mostly land in other NAICS lines even though disaster relief is core to each.[8][9] (2) Government delivery is out of scope: the Federal Emergency Management Agency's (FEMA) Disaster Relief Fund alone carried roughly $22.5 billion in full-year fiscal-2025 appropriations plus a ~$29 billion supplemental — none of which counts as private "industry receipts."[13] (3) CBP by construction excludes the self-employed, nonemployer businesses, and most government and all-volunteer operators, so faith-based and mutual-aid relief is largely invisible.[6] Bottom line: the measured industry is roughly $15 billion a year, but the real dollars moving through U.S. disaster and refugee relief are several times that.

4. Investable universe — where the value sits

There are no public pure-play companies in 62423; the direct providers are nonprofits and government agencies. Because the level has only one child, value concentrates exactly as it does at 624230: at the edges, in adjacent for-profit industries that surge when disasters strike. Public-market proxies (none classified in 62423) include disaster-recovery and consulting firms — Tetra Tech (Nasdaq: TTEK), AECOM (NYSE: ACM), ICF International (Nasdaq: ICFI), Jacobs (NYSE: J), Fluor (NYSE: FLR); the emergency-medical operator Global Medical Response (NYSE: GMRS, KKR-backed, IPO'd 2026, whose core is the excluded ambulance code 621910); and temporary/modular housing via Target Hospitality (Nasdaq: TH).[22][23][24][21] The actual core industry is "owned" by charities you cannot buy shares in — the American Red Cross, Direct Relief, the Salvation Army, Americares, and the ten refugee-resettlement VOLAGs (VOLAG = a VOLuntary AGency with a federal cooperative agreement to resettle refugees).[8][9][10][11] Full ticker table and organization list are in the 624230 primer.

5. How the money works

The economics are unchanged from the child, and they split into two very different engines. The nonprofit core runs on private contributions, gifts-in-kind (donated goods booked at fair value, which can dominate medical-relief "revenue"), and restricted government grants and cooperative agreements; there is no share price or dividend — surpluses accrue to reserves, and the "return" to a donor is mission impact. Donations are spiky, surging after a televised mega-disaster then fading, so charities must hold reserves to respond before the money arrives; watchdogs track the program efficiency ratio (share of spending reaching programs).[9][17] The for-profit contractor edge makes money like defense and infrastructure contractors: crews and assets sit on standby and spike when a disaster is declared, so revenue is lumpy and event-driven, and because much of it ultimately comes from FEMA/HUD, firms carry reimbursement-timing risk. The right metrics here are surge capacity, response speed, deployable labor, warehouse and shelter capacity, reimbursement success, and working-capital discipline — not same-store sales, regulated-utility rate base, or REIT-style measures.

6. Demand drivers

• Disaster frequency and severity — the core structural driver. NOAA (the National Oceanic and Atmospheric Administration) counted 27 U.S. billion-dollar weather and climate disasters in 2024, with ~$182.7 billion in losses, above the recent ~23-per-year average.[14]
• Government appropriations and policy — because government is the dominant payer, the size of FEMA's Disaster Relief Fund and post-event supplementals is the swing factor.[13]
• Migration and admissions policy — the resettlement half rises and falls with the annual refugee-admissions ceiling and State Department funding.[11]
• The philanthropic cycle — event-driven disaster giving, tracked at roughly $1.7 billion in a recent year, most of it for immediate response.[12]

7. Regulation

The frameworks are those of 624230: the Stafford Act and FEMA (presidential disaster declarations, the Disaster Relief Fund, Public Assistance grants, and a local-contractor preference); FEMA Public Assistance rules governing eligible costs and when a private nonprofit can be reimbursed directly; federal grant Uniform Guidance (2 CFR Part 200); IRS 501(c)(3) tax-exempt status and the public Form 990; and, for the resettlement half, the State Department's Bureau of Population, Refugees, and Migration (PRM) and the HHS Office of Refugee Resettlement (ORR).[15][16][18][19][11] For-profit firms additionally follow the Federal Acquisition Regulation (FAR); the SBA (Small Business Administration) size standard for this industry is $41.5 million in average annual receipts.[5]

8. Consolidation

The measured industry is fragmented and lightly concentrated — a few national brands plus a long tail. This level's federal concentration data (2022) show the top 4 firms at 35.5% of receipts, top 8 at 54.7%, top 20 at 79%, and top 50 at 91.5%, with a Herfindahl-Hirschman Index (HHI) of just 477 — well below the ~1,500 threshold antitrust regulators treat as "moderately concentrated." (HHI is a 0–10,000 concentration score; higher means more dominated by a few players.)[4] Classic mergers-and-acquisitions are limited in the nonprofit core (charities merge or close under strain rather than being bought), but on the for-profit edge private equity has been rolling up disaster-services firms — GMR's KKR-backed build-and-IPO is the clearest recent example. Policy can also reshape the industry overnight: in 2025 the State Department froze and moved to terminate refugee-resettlement agreements, triggering VOLAG layoffs and closures before a court partially restored funding.[11][10]

9. Risks

The risk profile is identical to 624230 and is dominated by funding and policy risk — because government is the largest payer, a policy shift can gut a segment overnight (as the 2025 refugee-funding termination showed).[11][13] Other material risks: reimbursement / receivable risk (for-profit firms front costs and wait on FEMA cycles); donation volatility and donor fatigue; operational and labor risk (disasters create simultaneous demand shocks and supply constraints); reputational and gift-in-kind risk (relief lives on trust, and donated goods inflate reported revenue); balance-sheet risk for PE-backed and newly public operators carrying leverage; and measurement risk, since public statistics omit government, volunteer, and much nonprofit activity.[6][9][16]

10. How to invest and the outlook

Because 62423 equals 624230, the playbook is the same. Public-market routes are all indirect: disaster-recovery contractors (TTEK, ACM, ICFI, J, FLR), emergency medical services (GMRS, with EMS/ambulance leverage), temporary/modular housing (TH), and catastrophe insurance/reinsurance and catastrophe bonds — the most liquid way to express a view on disaster frequency. Treat "buy the relief industry" as shorthand for "buy the disaster supply chain."[22][23][24] Private-market and philanthropic routes are more direct: private-equity and government-contracting rollups in debris, environmental cleanup, recovery management, housing, and EMS; and philanthropic capital (donor-advised funds, foundations, direct grants) into the nonprofit core, which delivers mission impact and tax deductibility, not a financial return.[19][11]

Outlook. A rising, government-funded demand curve meeting a fragmented, funding-fragile supply base — expect steady modest measured-industry growth set more by federal appropriations than by markets, a recovery-contractor edge that keeps benefiting from disaster frequency but with lumpy politically sensitive revenue, and a resettlement half under acute policy pressure.[13][14][11]

For full detail on every section above, see the 624230 primer — this level is that industry.

---

Sources

1. U.S. Census Bureau. "2022 NAICS Definition — 624230 Emergency and Other Relief Services." https://www.census.gov/naics/?input=624230&year=2022
2. U.S. Census Bureau. "2022 NAICS — Sector 62, Health Care and Social Assistance" (adjacent-code boundaries). https://www.census.gov/naics/?details=62&input=62&year=2022
3. U.S. Census Bureau. County Business Patterns, 2023 (NAICS 624230: establishments, employment, annual and Q1 payroll). https://data.census.gov/table/CBP2023.CB2300CBP?n=624230
4. U.S. Census Bureau. 2022 Economic Census — Concentration of Largest Firms (NAICS 624230: receipts, firms, CR4/CR8/CR20/CR50, HHI). https://data.census.gov/
5. U.S. Small Business Administration. "Table of Size Standards" (NAICS 624230 = $41.5M average annual receipts). 2023. https://www.sba.gov/document/support-table-size-standards
6. U.S. Census Bureau. "County Business Patterns Methodology" (scope and exclusions). https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html
7. American Red Cross. "FY2024 Annual Report" and consolidated financial statements; ProPublica Nonprofit Explorer. https://www.redcross.org/about-us/news-and-events/publications.html
8. Forbes (William P. Barrett), "When Disaster Strikes, These Top Charities Actually Deliver," Dec. 10, 2024; Direct Relief, "Ranked Among Forbes' 2024 Top U.S. Charities." https://www.forbes.com/sites/williampbarrett/2024/12/10/when-disaster-strikes-these-top-charities-actually-deliver/
9. Americares. "Emergency Programs." https://www.americares.org/what-we-do/emergency-programs/
10. USCIS, "The United States Refugee Admissions Program (USRAP)"; NPR, "Refugee aid groups still await millions of dollars in federal funds," Feb. 12, 2025; IRC, "IRC Responds to Termination of State Department Grants," 2025. https://www.uscis.gov/humanitarian/refugees-and-asylum/usrap
11. Center for Disaster Philanthropy & Candid. "Measuring the State of Disaster Philanthropy." https://disasterphilanthropy.org/cdp-resource/measuring-the-state-of-disaster-philanthropy-2024/
12. Congressional Research Service, "Disaster Relief Fund: State of Play (R47676)"; FEMA, "Disaster Relief Fund: Monthly Reports." https://www.congress.gov/crs-product/R47676
13. NOAA National Centers for Environmental Information. "Billion-Dollar Weather and Climate Disasters" (2024: 27 events, ~$182.7B). https://www.ncei.noaa.gov/access/billions/
14. Robert T. Stafford Disaster Relief and Emergency Assistance Act, 42 U.S.C. Chapter 68. https://uscode.house.gov/view.xhtml?req=granuleid%3AUSC-prelim-title42-chapter68
15. FEMA. "Public Assistance — Category B / Considerations for Private Nonprofit Organizations." https://www.fema.gov/assistance/public
16. FEMA. "Emergency Food and Shelter Program." https://www.fema.gov/grants/emergency-food-and-shelter
17. Electronic Code of Federal Regulations. "Title 2, Part 200 — Uniform Guidance." https://www.ecfr.gov/current/title-2/subtitle-A/chapter-II/part-200
18. Internal Revenue Service. "About Form 990." https://www.irs.gov/forms-pubs/about-form-990
19. Tetra Tech, Inc. "Disaster Recovery" (debris and FEMA-reimbursement figures). https://www.tetratech.com/solutions/disaster-and-emergency-management/disaster-recovery/
20. ICF International. "Disaster Management." https://www.icf.com/work/disaster-management
21. AECOM. "Disaster Resilience"; Jacobs Solutions, government resilience services. https://aecom.com/markets/national-governments-2/disaster-resilience/
22. Fluor Corporation, Mission Solutions; Target Hospitality Corp., "Q1 2026 Results" (workforce/disaster housing contracts). https://www.prnewswire.com/news-releases/target-hospitality-announces-first-quarter-2026-results-302767653.html
23. GMR Solutions Inc. "Announces Pricing of its Initial Public Offering" (NYSE: GMRS; ~$479M raised; KKR/Ares/HPS), May 2026; Reuters, "KKR-backed ambulance giant GMR Solutions raises $479 million in US IPO." https://www.globalmedicalresponse.com/news/gmr-solutions-inc-announces-pricing-of-its-initial-public-offering
24. AshBritt, Inc.; Ceres Environmental Services; CrowderGulf; IEM (recovery program management). https://ashbritt.com/about/