PlainZIP

Williamsfield, IL

Single-footprint Census roll-up for Williamsfield, IL: 1 USPS ZIP, population 900. 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 WILLIAMSFIELD-IL · Williamsfield, IL 1 ZIPs · 900 pop · #4760/25278 · Knox County

INC-HIGH · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-HIGH · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-HIGH $98,125
  • RANK-TOP #4760/25278
  • ABOVE-PEER over Oneida
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 95% owners
  • POP-VILLAGE 900
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $148,500

Nearest income peer: Oneida, IL ( $9,653 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 Williamsfield

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

Top 19%
household income vs 25,278 US cities
900
city population (Census)
1
USPS ZIP codes covered
$98,125
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 $98,125 and home value $148,500 should be read as near-neighborhood numbers ; bachelor's attainment averages 25.1%.

Owner-occupancy here runs high (95.3%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Illinois, Winnebago is the closest lower-income city and Trenton the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Williamsfield.

Population concentration

Williamsfield reads through its lone ZIP, 61489

900 ACS residents, one ZIP: 61489 is not the leading code inside Williamsfield, 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 Williamsfield's one ZIP

Citywide ZBP: 24 establishments, 122 employees , annual payroll $4,982k (~27 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 61489 (24 units) ; leading NAICS Retail trade (6) · also Wholesale trade · Other services (except public administration) .

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ZIP Codes in Williamsfield, IL

These ZIP codes sit in Knox County, which covers 16 ZIP codes in all; 1 of them fall in Williamsfield. See the Knox County roll-up →

No other city sharing Knox County reports a higher average ZIP median income than Williamsfield. Galesburg, Abingdon and Knoxville sit below it, so a household comparing this county on income alone starts here. Altona marks the far end of that range at $48,929, 50% below Williamsfield.

ZIP Code Population Median income Establishments Density
61489 900 $98,125 24 8
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Williamsfield 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 Williamsfield, .