PlainZIP

Rock City, IL

Single-footprint Census roll-up for Rock City, IL: 1 USPS ZIP, population 1,130. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

Source:

ACS city ledger plate

Sheet ROCK-CITY-IL · Rock City, IL 1 ZIPs · 1,130 pop · #7961/25278 · Stephenson County

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

  • INC-HIGH $84,167
  • RANK-UPPER #7961/25278
  • PHOTO-FINISH ≈ German Valley
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 90% owners
  • POP-VILLAGE 1,130
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $157,000

Nearest income peer: German Valley, IL ( $60 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 Rock City

Lowest/highest poles plus county-sharing cities nearest Rock City 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 2026-08-06

National city placement

According to ACS 5-Year Estimates, Rock City, IL sits among US cities with an above-median household income, on a village-scale population base, across a single-ZIP footprint.

Top 31%
household income vs 25,278 US cities
1,130
city population (Census)
1
USPS ZIP codes covered
$84,167
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.

Above-median income on a short ZIP list (1) - lead code 61070 (1,130 residents). Household income $84,167 is the roll-up; open the ZIP for tenure and commute.

Owner-occupancy here runs high (90.4%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Illinois, German Valley is the closest lower-income city and Ozark the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Rock City.

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ZIP Codes in Rock City, IL

These ZIP codes sit in Stephenson County, which covers 14 ZIP codes in all; 1 of them fall in Rock City. See the Stephenson County roll-up →

Rock City sits in the upper half of Stephenson County on income: Freeport, Pearl City and Orangeville report less, while Davis reports more. Freeport marks the far end of that range at $56,593, 33% below Rock City.

ZIP Code Population Density Timezone
61070 1,130 13 America/Chicago

On a short ZIP footprint the city roll-up and the primary ZIP nearly coincide. Start at the Census ACS tables for Rock City, then BLS wages if you need the labor-market side of the same small geography.

Census Bureau →BLS Wage Data → How we build city roll-ups → Guide: reading ZIP code data →

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →

Source: HUD USPS Crosswalk (ZIP-to-county mapping) and Source: simplemaps.com (ZIP coordinates & timezones). Verify with HUD →

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Census Bureau American Community Survey (ACS). Consult a qualified professional before making decisions based on this data.