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Joslin, IL
Census-designated place in Rock Island County, Illinois. ZIP codes: 61257.
Population
56
Land area
4.6sq mi
People per sq mi
12
ZIP codes
1
Joslin and its ZIP codes
Joslin at a glance
- Joslin is 95% less dense than Illinois as a whole.
Local data for Joslin, IL
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Rock Island County. PPP loans are for Joslin.
Unemployment rate
4.0%
Aug 2026, -1.4 pts in a year
Average annual pay
$72,612
69,106 jobs, 2025
Income per person
$54,067
BEA, 2024
Federal spending
$3.12B
FY 2026, $21,548 per person
Environment and hazard risk
Joslin, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: cold wave
Storm events since 1996
720
Countywide, mostly thunderstorm wind
Flood insurance policies
668
1.3% of homes, county
July high / Jan low
86° / 15°F
39.1 inches of rain a year
Health statistics
Share of adults in Joslin, IL, CDC PLACES estimates
Obesity
36.3%
U.S. 33.3% +3.0 pts
Diabetes
14.4%
U.S. 12.1% +2.3 pts
Smoking
13.7%
U.S. 12.8% +0.9 pts
Uninsured (18-64)
7.2%
U.S. 11.1% -3.9 pts
ZIP codes in Joslin
1 in or overlapping Joslin. Population shown
Cities near Joslin
| Name | Distance | Land area (sq mi) |
|---|---|---|
| HillsdaleVillage | 3.8 mi | 0.6 |
| Rapids CityVillage | 6.5 mi | 1.6 |
| ClevelandVillage | 6.7 mi | 0.3 |
| Port ByronVillage | 6.7 mi | 2.4 |
| BarstowCensus-designated place | 7.9 mi | 0.1 |
| Le Claire, IACity | 8 mi | 4.7 |
| GeneseoCity | 8.3 mi | 4.7 |
| ColonaCity | 8.5 mi | 3.8 |
| CordovaVillage | 9.5 mi | 0.6 |
| ErieVillage | 9.6 mi | 1.4 |
| HamptonVillage | 9.7 mi | 1.5 |
| Carbon CliffVillage | 10 mi | 2.1 |
| Princeton, IACity | 10 mi | 3.3 |
| SilvisCity | 11 mi | 4.3 |
| Campbell's IslandCensus-designated place | 11 mi | 0.5 |
| Argo, IACensus-designated place | 12 mi | 0.5 |
Frequently asked questions
- What county is Joslin, IL in?
- Joslin is in Rock Island County, Illinois.
- What ZIP codes are in Joslin, IL?
- ZIP codes in or overlapping Joslin include 61257.
- What is the population of Joslin, IL?
- About 56 people live in Joslin, based on American Community Survey 5-year estimates.
- What cities are near Joslin?
- Nearby places include Hillsdale (3.8 mi), Rapids City (6.5 mi), Cleveland (6.7 mi), Port Byron (6.7 mi), Barstow (7.9 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023