Gilson, IL · standard
ZIP Code 61436
Knox County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 951
- 6/sq mi Low-density area
- $76,000
- Median income Near-median income area
- $205,000
- Median home value Near-median home value
- 19.5%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Gilson pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.
- Top 44%
- household income, US ZIPs
- 45th pct
- home value, US ZIPs
- 6
- people per sq mi
- 87%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 61436 against every reporting US ZIP.
ZIP code 61436 is a sparsely populated ZIP (a standard USPS delivery area) in Gilson, Knox County, Illinois, home to just 951 residents across 158.5 square miles, a density of 6 people per square mile, in the Chicago time zone.
ZIP 61436 lands in the middle-income range, with a median household income of $76,000 (5% below the average Illinois ZIP), while per-capita income is $49,198. Both reported hardship measures are comparatively low in absolute terms: poverty is 7.7% and unemployment is 3.4%. Median home value is $205,000 (7% above the average Illinois ZIP); 87.0% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 19.5% of adults hold a bachelor's degree or higher, the median age is 59.5, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Knox County, so 61436 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 61436, Gilson, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
951
Population
158.5
Area (sq mi)
6
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 61436?
59.5
Median Age
49.0%
Male
51.0%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$76,000
Median Household Income
-5% vs state ZIP avg
$49,198
Per Capita Income
7.7%
Poverty Rate
3.4%
Unemployment Rate
How ZIP 61436 ranks among Illinois ZIPs
Gilson, IL household income vs. every Illinois ZIP code
Median household income among 1,334 reporting Illinois ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$76,000 Top 49% higher than 51% of 1,334 Illinois ZIPs
Each bar is a $20K-wide band; taller bars hold more Illinois ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
390housing units
390
Total Housing Units
332
Occupied Units
58
Vacant Units
2.24
Avg Household Size
Occupancy Type
$205,000
Median Home Value
+7% vs state ZIP avg
1966
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 5 business establishments in ZIP 61436, employing approximately 4 people with a combined annual payroll of $406,000.
5
Businesses
4
Employees
$406K
Annual Payroll
0
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 61436 vs 61448 →
ZIP 61436 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61448
Knoxville (61448)
3,823 residents
- 61428 986
Dahinda (61428)
986 residents
- 61436 951
Gilson (61436)
951 residents
- 61430 828
East Galesburg (61430)
828 residents
- 61458 822
Maquon (61458)
822 residents
What this shows Among its immediate neighbors, ZIP 61436 ranks #3 by population - useful context the national average alone can't give.
ZIP 61436 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61448
Knoxville (61448)
$82,500 median income
- 61430
East Galesburg (61430)
$79,333 median income
- 61428
Dahinda (61428)
$77,143 median income
- 61436
Gilson (61436)
$76,000 median income
- 61458
Maquon (61458)
$65,461 median income
What this shows By household income, ZIP 61436 ranks #4 of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 61436, both outside IL so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Knox County
Related Areas
Frequently Asked Questions
What county is ZIP code 61436 in?
ZIP code 61436 (Gilson) is located in Knox County, Illinois. Knox County contains multiple ZIP codes, see the full list at /counties/knox-il.
What is the population of ZIP code 61436?
ZIP code 61436 in Gilson, IL has a population of 951 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 61436?
The median household income in ZIP 61436 is $76,000, which is 0% below the national average of $76,288.
What is the average home value in ZIP 61436?
The median home value in ZIP 61436 is $205,000, which is 26% below the national average of $278,155.
What is the demographic makeup of ZIP 61436?
The largest racial group in ZIP 61436 is White at 99.6%. Hispanic or Latino residents make up 0.9% of the population.
How many businesses are in ZIP code 61436?
ZIP code 61436 has 5 business establishments employing approximately 4 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 61436?
In ZIP code 61436, 41.7% of residents aged 25+ have a high school diploma or higher, and 19.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 61436?
In ZIP code 61436, approximately 87.0% of occupied housing units are owner-occupied and 13.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 61436?
The poverty rate in ZIP code 61436 is 7.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 61436's numbers, next.
- See how ZIP 61436 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Gilson, IL ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.