PlainZIP

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
$76,000
Median income
$205,000
Median home value
19.5%
Bachelor's or higher

The verdict

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 Illinois average), while per-capita income is $49,198. Local economic indicators show a 7.7% poverty rate alongside 3.4% unemployment. Median home value sits at $205,000 (7% above the state average), median rent at - a month, and owner-occupancy at 87.0%.

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 -. To put 61436 in local context, 4 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Knox County, for a geography-aware comparison.

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 61436?

59.5

Median Age

49.0%

Male

51.0%

Female

0.0%

Foreign-Born

White 99.6%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 0.9%

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

$49,198

Per Capita Income

7.7%

Poverty Rate

3.4%

Unemployment Rate

How ZIP 61436 ranks nationally

Gilson, IL household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$76,000 Top 44% higher than 56% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 41.7%
Bachelor's Degree or Higher 19.5%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

390

Total Housing Units

332

Occupied Units

58

Vacant Units

2.24

Avg Household Size

Occupancy Type

Owner 87.0%
Renter 13.0%

$205,000

Median Home Value

+7% vs state

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.

residents

What this shows Among its immediate neighbors, ZIP 61436 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 61436 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
61448 Knoxville, IL 3,823 5.2 mi
61458 Maquon, IL 822 6.0 mi
61430 East Galesburg, IL 828 7.3 mi
61428 Dahinda, IL 986 7.6 mi

More ZIP Codes in Knox County

61401 standard
Galesburg, IL
Pop: 34,788
61410 standard
Abingdon, IL
Pop: 3,912
61448 standard
Knoxville, IL
Pop: 3,823
61488 standard
Wataga, IL
Pop: 1,120
61572 standard
Yates City, IL
Pop: 1,068
61467 standard
Oneida, IL
Pop: 1,048

Related Areas

Knox County Gilson, IL Illinois

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.

Read our methodology to see how this data is sourced, computed, and verified.