Our installation area covers the City of St. Louis and the Missouri counties around it — St. Louis County, St. Charles, Jefferson, Franklin, Warren and Lincoln — plus Madison, St. Clair and Monroe counties in Illinois. Four places get a closer look below, because their tornado record, housing and permit rules change which shelter fits. For any other address, the local code and the site get checked before a quote goes out.
Four areas in detail
St. Louis City — the 2025 tornado path through Forest Park and north St. Louis; housing with a 1938 median build year; Executive Order 90 rebuild permits; sirens now automated.
North St. Louis County — Bridgeton, Hazelwood, Florissant, Ferguson, Maryland Heights, St. Ann and Berkeley: the corridor hit by the 1967 F4 and the 2011 Good Friday EF4.
St. Charles County — every storm shelter in unincorporated areas needs a permit; newer slab homes and attached garages; EF3s in 2013 and 2021.
Metro East — Granite City, Edwardsville, Collinsville, Belleville: the American Bottom floodplain, four tornadoes since 2011, above-ground shelter country.
The rest of our service area
| Area | What to know |
|---|---|
| St. Louis County (outside North County) | 88 municipalities plus unincorporated county on the 2015 codes; the high-end EF3 of Dec. 31, 2010 crossed Fenton, Sunset Hills and Crestwood |
| Jefferson County | About 9% of housing units are mobile homes; unincorporated county on the 2015 IRC as amended |
| Franklin County | About 9% mobile homes; more rural lots where a well-drained yard shelter can make sense |
| Lincoln and Warren counties | Rural lots; SEMA lists school and community safe rooms in Troy and Truesdale |
| Monroe County, IL | Tornadoes touched down here on April 22, 2011; Illinois permitting is local |
Mobile-home shares are Census 2020–2024 estimates.
Sources
- NWS St. Louis — January 24, 1967 tornado — —; accessed 2026-10-10
- NWS St. Louis — April 22, 2011 event page — —; accessed 2026-10-10
- NWS St. Louis — May 31, 2013 survey PNS — 2013-06-02; accessed 2026-10-10
- NWS St. Louis — Dec 10, 2021 event page and surveys — 2021-12-11/12; accessed 2026-10-10
- St. Charles County Code §500.150 — 2021 Residential Code, R105.2 — Ord. 25-085 (2025-12-15); accessed 2026-10-10
- City of St. Louis — building codes; permits page — upd. 2025-08-11; accessed 2026-10-10
- St. Louis County — 2015 codes "user friendly" (Ord. 27,654) — approved 2019-12-18, eff. 2020-04-01; accessed 2026-10-10
- Jefferson County Code §500.400 — Ord. 23-0465 (2023-11-16); accessed 2026-10-10
- Census Reporter — ACS 2020–2024 B25024 mobile homes — 2020–2024; accessed 2026-10-10
- Southwestern Illinois Flood Prevention District Council — updates 2018–2023; accessed 2026-10-10
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