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Belknap, IL
Village in Johnson County, Illinois.
Population
115
Land area
1.1sq mi
People per sq mi
109
ZIP codes
0
Belknap and its ZIP codes
Belknap at a glance
- Belknap is 52% less dense than Illinois as a whole.
Local data for Belknap, IL
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Johnson County. PPP loans are for Belknap.
Unemployment rate
4.5%
Aug 2026, -0.9 pts in a year
Average annual pay
$61,127
2,715 jobs, 2025
Income per person
$44,062
BEA, 2024
Federal spending
$84.3M
FY 2026, $6,338 per person
Environment and hazard risk
Belknap, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: earthquake
Storm events since 1996
685
Countywide, mostly dense fog
Flood insurance policies
5
0.1% of homes, county
July high / Jan low
89° / 26°F
49.4 inches of rain a year
Health statistics
Share of adults in Belknap, IL, CDC PLACES estimates
Obesity
43.1%
U.S. 33.3% +9.8 pts
Diabetes
16.7%
U.S. 12.1% +4.6 pts
Smoking
19.8%
U.S. 12.8% +7.0 pts
Uninsured (18-64)
9.0%
U.S. 11.1% -2.1 pts
Cities near Belknap
| Name | Distance | Land area (sq mi) |
|---|---|---|
| KarnakVillage | 3 mi | 1.8 |
| CypressVillage | 5.1 mi | 0.8 |
| New Grand ChainVillage | 6.5 mi | 1 |
| ViennaCity | 7.1 mi | 2.8 |
| JoppaVillage | 9.5 mi | 0.5 |
| BuncombeVillage | 10 mi | 1.2 |
| Bandana, KYCensus-designated place | 12 mi | 1.9 |
| DongolaVillage | 13 mi | 1.1 |
| OlmstedVillage | 13 mi | 3.4 |
| UllinVillage | 14 mi | 2.8 |
| SimpsonVillage | 14 mi | 0.5 |
| MetropolisCity | 16 mi | 6 |
| PulaskiVillage | 16 mi | 1.3 |
| Kevil, KYCity | 17 mi | 0.6 |
| GorevilleVillage | 17 mi | 2.7 |
| Mill CreekVillage | 17 mi | 0.4 |
Frequently asked questions
- What county is Belknap, IL in?
- Belknap is in Johnson County, Illinois.
- What is the population of Belknap, IL?
- About 115 people live in Belknap, based on American Community Survey 5-year estimates.
- What cities are near Belknap?
- Nearby places include Karnak (3 mi), Cypress (5.1 mi), New Grand Chain (6.5 mi), Vienna (7.1 mi), Joppa (9.5 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023