PlainZIP

Thomson, IL

Single-footprint Census roll-up for Thomson, IL: 1 USPS ZIP, population 1,631. 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 THOMSON-IL · Thomson, IL 1 ZIPs · 1,631 pop · #13868/25278 · Carroll County

INC-MID · RANK-MID · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-MID $68,500
  • RANK-MID #13868/25278
  • PHOTO-FINISH ≈ Chadwick
  • BOOK-ONE 1 ZIP
  • OWN-MID 78% owners
  • POP-VILLAGE 1,631
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $173,100

Nearest income peer: Chadwick, IL (+ $829 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 Thomson

Lowest/highest poles plus county-sharing cities nearest Thomson 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, Thomson, IL sits among US cities with a below-median household income, on a village-scale population base, across a single-ZIP footprint.

45th pct
household income vs 25,278 US cities
1,631
city population (Census)
1
USPS ZIP codes covered
$68,500
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.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $68,500 and poverty 15.7% concentrate in 61285.

Owner-occupancy sits in a mixed band (78.0%) - check the ZIP page's tenure split before treating Thomson as a pure owner town.

Within Illinois, Oakford is the closest lower-income city and Good Hope the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Thomson.

Population concentration

One ZIP, 61285, is all of Thomson

There is no split to weigh here: 61285 holds every one of Thomson's 1,631 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Sparse ZBP book inside single-ZIP Thomson

Citywide ZBP: 20 establishments, 194 employees , annual payroll $18,514k (~12 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 61285 (20 units) ; leading NAICS Retail trade (6) · also Accommodation and food services .

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ZIP Codes in Thomson, IL

These ZIP codes sit in Carroll County, which covers 7 ZIP codes in all; 1 of them fall in Thomson. See the Carroll County roll-up →

Thomson lands mid-pack among the 6 cities sharing Carroll County: Lanark and Shannon earn more and Savanna, Mount Carroll and Milledgeville earn less. Savanna marks the far end of that range at $50,691, 26% below Thomson.

ZIP Code Population Median income Establishments Density
61285 1,631 $68,500 20 16
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Thomson 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 Thomson, .