Other Warehousing and Storage (U.S.) — NAICS 49319

An investor's rollup primer. This is a NAICS industry (5-digit) that contains exactly one child industry, so it is effectively identical to that child. Figures are reported facts with citations; the full detail lives in the child primer for 493190.

1. Overview

NAICS 49319 — "Other Warehousing and Storage" — is the catch-all corner of the U.S. storage industry: businesses paid to hold someone else's goods when those goods are not general merchandise, not refrigerated, and not farm crops. NAICS stands for the North American Industry Classification System, the U.S. government's standard code for industries.[1] In practice the level covers three very different businesses under one label: bulk-liquid storage terminals (tank farms holding crude oil, gasoline, jet fuel, chemicals, and increasingly biofuels), records and document storage, and a long tail of specialty operators (lumber terminals, bonded whiskey and wine warehouses, hazardous-materials storage, automobile "dead" storage).[1]

For an investor, storage is an infrastructure/annuity business: recurring rent for space or volume, assets that last decades, and high incremental margins once a facility is built. The economics resemble toll roads and real estate more than manufacturing.

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

NAICS is a nested system. This 5-digit industry (49319) rolls up its 6-digit national industry children. Here there is only one:

Because 493190 is the only child, 49319 and 493190 are the same thing — same definition, same establishments, same receipts. The extra digit exists only to keep the coding system consistent; it carves out no sub-detail. For full detail — the investable universe, how the money works, demand drivers, regulation, consolidation, and how to invest — read the 493190 primer. This page is a short rollup that states the level's own figures and points you there.

3. Size (this level's rollup figures)

From our ground-truth federal statistics for NAICS 49319. Because the single child is this level, these numbers equal 493190's. They come from different programs and reference years, so treat them as a set of indicators, not one synchronized financial statement.

So by the official count this is a modest, service-heavy industry: roughly $9.4 billion in annual receipts, about 62,000 workers, and an average establishment of only ~23 employees. Payroll is close to half of receipts (though the two figures come from different years and programs), consistent with a labor-plus-real-estate service business. The Herfindahl-Hirschman Index (a standard concentration measure) is suppressed in the source data and so is not reported here.

Undercount caveat — important. The $9.4-billion receipts figure badly understates how much "other storage" activity actually happens, because the code captures only third-party storage-as-a-service. It leaves out (a) product stored by firms that take title and are counted as wholesalers or midstream energy companies; (b) storage done in-house by refiners, traders, and pipeline operators; and (c) consumer self-storage, which sits in real estate (NAICS 531130). County Business Patterns and the Economic Census also cover employer establishments and generally exclude government operations, so tiny owner-operated storage businesses are missed too.[2][5] For scale, industry researchers put the U.S.-relevant bulk petroleum and chemical storage market alone in the tens of billions of dollars — dwarfing the census receipts for the pure-service code.[14] Read 49319's official numbers as the visible tip of a much larger storage economy.

4. Investable universe (where value concentrates)

Because there is only one child, value concentrates exactly as it does in 493190 — see that primer for the full table. In brief: there is no large, pure-play U.S. stock for most of this level. The closest listed pure play is Iron Mountain (NYSE: IRM) on the records side, structured as a real estate investment trust (REIT). Bulk-liquid terminals mostly sit inside diversified energy-midstream firms — Kinder Morgan (KMI), Energy Transfer / Sunoco (ET / SUN), Global Partners (GLP), several of them master limited partnerships (MLPs) that issue K-1 tax forms — or are privately owned by infrastructure funds (IFM, Brookfield, Blackstone) and global operators (Vopak, Oiltanking). Royal Vopak (Amsterdam: VPK) is the purest listed bulk-liquid play but is foreign-listed. For most investors, real direct exposure is private-market, not the stock exchange.[7][11][12][13][14]

5. How the money works

The model is the same across this level: capacity × occupancy × storage rate, plus handling and value-added service fees. Storage rent is the contracted, high-margin annuity; throughput and service fees are the volume-sensitive layer. The cost base is mostly fixed (land, tanks, buildings, racking, security, compliance), so utilization is the swing variable and incremental storage drops almost straight to profit. Bulk-liquid terminals live on the shape of the commodity curve (contango fills tanks; backwardation empties them); records storage is a low-churn annuity with price escalators; specialty niches earn multi-year, often bond-related fees. High capital intensity and hard-to-permit locations create genuine barriers to entry. Full mechanics are in the 493190 primer.[15][16]

6. Demand drivers

Same as the child: commodity price structure and volatility (contango and stockpiling fill tanks), trade flows and inventories, regulatory retention requirements for records (tax rules, litigation holds, HIPAA, Sarbanes–Oxley), energy-mix shifts creating demand for biofuel and ammonia tankage, and specialty booms in aging spirits, lumber, and chemicals.[15][17]

7. Regulation

Storage here is not price-regulated like a utility — fees are market-set. The binding rules are environmental, safety, security, and customs/tax: EPA Spill Prevention, Control, and Countermeasure (SPCC) requirements for oil tanks, API 653 tank-integrity standards, OSHA worker-and-fire-safety rules, Coast Guard/MTSA security for waterfront terminals, and U.S. Customs (bonded warehousing) plus the Alcohol and Tobacco Tax and Trade Bureau (TTB) for aging spirits. Compliance is a cost but also a moat. Detail and citations are in the 493190 primer.[18][19]

8. Consolidation

The federal concentration data are for this level and its single child alike: the four largest firms take 42.9% of receipts, the top eight 53.7%, the top twenty 66.7%, and the top fifty 78.8% — top-heavy but long-tailed, with hundreds of small operators splitting the rest.[4] (HHI suppressed.) Consolidation is the dominant theme on both sides: Iron Mountain's 2016 Recall acquisition on the records side; and on terminals, Buckeye taken private by IFM (2019), Magellan absorbed by ONEOK (2023), and NuStar absorbed by Sunoco/Energy Transfer (2024), with infrastructure funds the most aggressive buyers.[10][11][12]

9. Risks

Identical to 493190: commodity-cycle whiplash in terminal demand; long-term energy transition pressure on petroleum tankage (partly offset by repurposing tanks for biofuels and ammonia); secular decline of paper in records (offset by stickiness and a data-center pivot); environmental and safety liability (spills, contamination, PFAS); interest-rate/valuation sensitivity for these real-estate-like assets; customer and contract concentration; labor intensity; MLP/REIT tax-structure friction; and disclosure/classification risk, since public companies bury this exposure inside larger businesses.

10. How to invest & outlook

For a general investor, 49319 is an infrastructure-style, income-oriented corner of the market that you mostly reach through a REIT (Iron Mountain), a handful of midstream MLPs, or private infrastructure funds rather than a single clean stock. Near-term demand looks supported by energy-security stockpiling, price volatility, and biofuels blending; records storage should remain a stable annuity in slow secular decline; and consolidation is likely to continue, with infrastructure capital the marginal buyer. The main long-term swing factor is the energy transition. Because this level is identical to its one child, use the 493190 primer for the full how-to-invest discussion, the investable-universe table, and complete sourcing.

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Sources

Drawn from the child primer (NAICS 493190); numbering matches that primer.

1. U.S. Census Bureau, "North American Industry Classification System: 493190 Other Warehousing and Storage" (2022 definition and cross-references). https://www.census.gov/naics/?input=493190&year=2022&details=493190
2. U.S. Census Bureau, County Business Patterns: 2023 (establishments, employment, annual and first-quarter payroll). https://www.census.gov/programs-surveys/cbp.html
3. U.S. Census Bureau, 2022 Economic Census, Summary Statistics (receipts and firm counts). https://www.census.gov/programs-surveys/economic-census.html
4. U.S. Census Bureau, "Concentration of Largest Firms: 2022" Economic Census (CR4 42.9%, CR8 53.7%, CR20 66.7%, CR50 78.8%; HHI suppressed). https://data.census.gov/table/ECNSIZE2022.EC2200SIZECONCEN
5. U.S. Census Bureau, 2022 Economic Census Methodology (coverage of employer establishments; exclusions). https://www.census.gov/programs-surveys/economic-census/year/2022/technical-documentation/methodology.html
6. Iron Mountain Incorporated, "Iron Mountain Reports Fourth Quarter and Full Year 2024 Results." https://www.businesswire.com/news/home/20250213929445/en/Iron-Mountain-Reports-Fourth-Quarter-and-Full-Year-2024-Results
7. U.S. Department of Justice, "Iron Mountain and Recall Holdings Agree to Divest Records Management Assets," 2016. https://www.justice.gov/archives/opa/pr/iron-mountain-and-recall-holdings-agree-divest-records-management-assets-condition-proceed
8. Kinder Morgan, "Terminals" (largest independent U.S. terminal operator). https://www.kindermorgan.com/Operations/Terminals/Index
9. PR Newswire, "Sunoco LP to Acquire NuStar Energy L.P. in Transaction Valued at $7.3 Billion," 2024. https://www.prnewswire.com/news-releases/sunoco-lp-to-acquire-nustar-energy-lp-in-transaction-valued-at-7-3-billion-302040392.html
10. StockTitan, "Global Partners LP overview." https://www.stocktitan.net/overview/GLP/
11. GlobeNewswire, "Bulk Petroleum and Chemical Storage Industry Report 2026–2035: A $51.92 Billion Market by 2030," 2026. https://www.globenewswire.com/news-release/2026/02/26/3245861/28124/en/Bulk-Petroleum-and-Chemical-Storage-Industry-Report-2026-2035-A-51-92-Billion-Market-by-2030.html
12. S&P Global Commodity Insights, "Commodities 2026: Oil storage expands globally as energy security, trading drive demand," 2026. https://www.spglobal.com/commodityinsights/en/market-insights/latest-news/crude-oil/010826-commodities-2026-oil-storage-expands
13. Center for Strategic and International Studies (CSIS), "Filled to the Brim: The Importance of Flexible and Innovative Storage in Commodities Markets." https://www.csis.org/analysis/filled-brim-importance-flexible-and-innovative-storage-commodities-markets
14. GlobeNewswire / Astute Analytica, "Oil Storage Market to Worth Over US$16.7 Billion by 2033," 2025. https://www.globenewswire.com/news-release/2025/11/10/3184911/0/en/Oil-Storage-Market-to-Worth-Over-US-16-7-Billion-by-2033-Astute-Analytica.html
15. U.S. Environmental Protection Agency, "Spill Prevention, Control, and Countermeasure (SPCC)" (40 CFR 112). https://www.epa.gov/oil-spills-prevention-and-preparedness-regulations/overview-spill-prevention-control-and
16. iFluids Engineering, "API 653 Tank Inspection Code — In-Service Integrity Explained." https://ifluids.com/standard/api-653-tank-inspection-code/
17. Occupational Safety and Health Administration, "Warehousing" (29 CFR 1910.178; 29 CFR 1910.106). https://www.osha.gov/warehousing
18. U.S. Customs and Border Protection, "What Is a Customs Bonded Warehouse?" https://www.help.cbp.gov/s/article/Article1853?language=en_US
19. Alcohol and Tobacco Tax and Trade Bureau, storage/permitting for distilled spirits. https://www.ttb.gov/ttb-form-511011