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Gilson, IL
Census-designated place in Knox County, Illinois. ZIP codes: 61436.
Population
120
Land area
0.3sq mi
People per sq mi
363
ZIP codes
1
Gilson and its ZIP codes
Gilson at a glance
- Gilson is 59% denser than Illinois as a whole.
Local data for Gilson, IL
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Knox County. PPP loans are for Gilson.
Unemployment rate
4.4%
Aug 2026, -1.2 pts in a year
Average annual pay
$49,451
17,188 jobs, 2025
Income per person
$51,995
BEA, 2024
Federal spending
$351M
FY 2026, $7,027 per person
PPP loans
$964K
53 loans, 96 jobs reported
Environment and hazard risk
Gilson, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: strong wind
Storm events since 1996
476
Countywide, mostly thunderstorm wind
Flood insurance policies
29
0.1% of homes, county
July high / Jan low
84° / 14°F
40.5 inches of rain a year
Health statistics
Share of adults in Gilson, IL, CDC PLACES estimates
Obesity
37.9%
U.S. 33.3% +4.6 pts
Diabetes
11.3%
U.S. 12.1% -0.8 pts
Smoking
16.4%
U.S. 12.8% +3.6 pts
Uninsured (18-64)
7.3%
U.S. 11.1% -3.8 pts
ZIP codes in Gilson
1 in or overlapping Gilson. Population shown
Cities near Gilson
| Name | Distance | Land area (sq mi) |
|---|---|---|
| MaquonVillage | 4.9 mi | 0.2 |
| KnoxvilleCity | 5.2 mi | 2.3 |
| Oak RunCensus-designated place | 7.6 mi | 4.3 |
| East GalesburgVillage | 8.2 mi | 1.4 |
| WilliamsfieldVillage | 10 mi | 1.2 |
| London MillsVillage | 11 mi | 0.7 |
| GalesburgCity | 11 mi | 17.8 |
| AbingdonCity | 11 mi | 1.4 |
| Yates CityVillage | 11 mi | 0.5 |
| WatagaVillage | 12 mi | 0.8 |
| VictoriaVillage | 13 mi | 0.5 |
| ElmwoodCity | 13 mi | 1.4 |
| HendersonVillage | 14 mi | 0.3 |
| OneidaCity | 15 mi | 0.8 |
| St. AugustineVillage | 15 mi | 0.6 |
| FairviewVillage | 15 mi | 4.2 |
Frequently asked questions
- What county is Gilson, IL in?
- Gilson is in Knox County, Illinois.
- What ZIP codes are in Gilson, IL?
- ZIP codes in or overlapping Gilson include 61436.
- What is the population of Gilson, IL?
- About 120 people live in Gilson, based on American Community Survey 5-year estimates.
- What cities are near Gilson?
- Nearby places include Maquon (4.9 mi), Knoxville (5.2 mi), Oak Run (7.6 mi), East Galesburg (8.2 mi), Williamsfield (10 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023