PlainZIP

Somonauk, IL

Single-footprint Census roll-up for Somonauk, IL: 1 USPS ZIP, population 4,448. 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 SOMONAUK-IL · Somonauk, IL 1 ZIPs · 4,448 pop · #2737/25278 · LaSalle County

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

  • INC-TOP $113,411
  • RANK-TOP #2737/25278
  • ABOVE-PEER over Utica
  • BOOK-ONE 1 ZIP
  • OWN-MID 85% owners
  • POP-VILLAGE 4,448
  • SPREAD-UNK Single-ZIP book
  • HOME-MID $257,400

Nearest income peer: Utica, IL ( $4,411 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 Somonauk

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

Top 11%
household income vs 25,278 US cities
4,448
city population (Census)
1
USPS ZIP codes covered
$113,411
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 $113,411 and home value $257,400 should be read as near-neighborhood numbers ; bachelor's attainment averages 32.4%.

Owner-occupancy sits in a mixed band (84.6%) - check the ZIP page's tenure split before treating Somonauk as a pure owner town.

Within Illinois, Tinley Park is the closest lower-income city and Riverside the closest higher-income city by average ZIP household income. Their 2 and 1 ZIP footprints are the immediate statewide comparison set for Somonauk.

Population concentration

One ZIP, 60552, is all of Somonauk

There is no split to weigh here: 60552 holds every one of Somonauk's 4,448 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

Mid-pack ZBP load on Somonauk's one ZIP

Citywide ZBP: 70 establishments, 433 employees , annual payroll $23,096k (~16 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 60552 (70 units) ; leading NAICS Other services (except public administration) (14) · also Construction · Accommodation and food services .

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ZIP Codes in Somonauk, IL

These ZIP codes sit in LaSalle County, which covers 25 ZIP codes in all; 1 of them fall in Somonauk. See the LaSalle County roll-up →

No other city sharing LaSalle County reports a higher average ZIP median income than Somonauk. Ottawa, Streator and Peru sit below it, so a household comparing this county on income alone starts here. Streator marks the far end of that range at $59,060, 48% below Somonauk.

ZIP Code Population Median income Establishments Density
60552 4,448 $113,411 70 63
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Somonauk 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 Somonauk, .