Cass
Source:
Illinois
Cass is a sparsely populated county in Illinois with 6 ZIP codes, 14,404 people, and above-median household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Cass, IL sits among US counties with an above-median household income, on a sparsely populated county population base, across a compact ZIP cluster.
- Top 49%
- household income vs 3,210 US counties
- 14,404
- combined ZIP population
- 6
- USPS ZIP codes covered
- $67,937
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Cass lands in the national county income distribution as above-median household income on sparsely populated county footing (FIPS 17017, 6 ZIPs, combined population 14,404). Sort the ZIP table by population before treating the county mean as uniform.
Above-median income on a compact ZIP cluster (6 codes). Population density still swings from downtown to farm-edge; the density column is the fastest filter before a side-by-side compare. County-level HUD and FBI inputs still key off FIPS 17017.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
6
Total ZIPs
14,404
Total Population
ZIP Codes in Cass
Side-by-side: Compare 62618 vs 62691 →
Frequently Asked Questions
What is the population of Cass?
Cass has a total population of 14,404 across 6 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Cass?
Cass includes 6 ZIP codes: 62618, 62691, 62612, 62611, 62627, 62622.