PlainZIP

O Fallon, IL

Single-footprint Census roll-up for O Fallon, IL: 1 USPS ZIP, population 31,348. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet O-FALLON-IL · O Fallon, IL 1 ZIPs · 31,348 pop · #3855/25278 · St. Clair County

INC-HIGH · RANK-TOP · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-SMALL · SPREAD-UNK · HOME-MID

  • INC-HIGH $103,818
  • RANK-TOP #3855/25278
  • PHOTO-FINISH ≈ Freeburg
  • BOOK-ONE 1 ZIP
  • OWN-MID 71% owners
  • POP-SMALL 31,348
  • SPREAD-UNK Single-ZIP book
  • HOME-MID $291,800

Nearest income peer: Freeburg, IL ( $476 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around O Fallon

Lowest/highest poles plus county-sharing cities nearest O Fallon on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, O Fallon, IL sits among US cities with an upper-quartile household income, on a small-city population base, across a single-ZIP footprint.

Top 15%
household income vs 25,278 US cities
31,348
city population (Census)
1
USPS ZIP codes covered
$103,818
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $103,818 and home value $291,800 should be read as near-neighborhood numbers ; bachelor's attainment averages 52.0%.

Owner-occupancy sits in a mixed band (71.3%) - check the ZIP page's tenure split before treating O Fallon as a pure owner town.

Within Illinois, Collison is the closest lower-income city and Addieville the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for O Fallon.

Population concentration

O Fallon reads through its lone ZIP, 62269

31,348 ACS residents, one ZIP: 62269 is not the leading code inside O Fallon, it is the only one on file. Treat the ZIP page as the primary source for anything below the city-wide total.

Census ZBP business roll-up

Dense ZBP book packed into O Fallon's one ZIP

Citywide ZBP: 842 establishments, 13,150 employees , annual payroll $648,085k (~27 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 62269 (842 units) ; leading NAICS Health care and social assistance (142) · also Accommodation and food services · Retail trade .

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ZIP Codes in O Fallon, IL

These ZIP codes sit in St. Clair County, which covers 28 ZIP codes in all; 1 of them fall in O Fallon. See the St. Clair County roll-up →

O Fallon sits in the upper half of St. Clair County on income: Belleville, East Saint Louis and Fairview Heights report less, while Smithton reports more. East Saint Louis marks the far end of that range at $35,708, 66% below O Fallon.

ZIP Code Population Median income Establishments Density
62269 31,348 $103,818 842 448
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

O Fallon roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving O Fallon, .