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Williamson, IA
City in Lucas County, Iowa. ZIP codes: 50272.
Population
190
Land area
0.4sq mi
People per sq mi
498
ZIP codes
1
Williamson and its ZIP codes
Williamson at a glance
- Williamson is about 8.7 times as dense as Iowa as a whole.
Local data for Williamson, IA
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Lucas County. PPP loans are for Williamson.
Unemployment rate
4.2%
Aug 2026, +0.1 pts in a year
Average annual pay
$53,644
3,177 jobs, 2025
Income per person
$53,668
BEA, 2024
Federal spending
$59.2M
FY 2026, $6,853 per person
PPP loans
$27.6K
2 loans, 2 jobs reported
Environment and hazard risk
Williamson, IA, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: drought
Storm events since 1996
463
Countywide, mostly flood
July high / Jan low
85° / 11°F
37.3 inches of rain a year
Hazards, floods and storm historyCheck a flood zone1 historic places
Health statistics
Share of adults in Williamson, IA, CDC PLACES estimates
Obesity
40.0%
U.S. 33.3% +6.7 pts
Diabetes
13.4%
U.S. 12.1% +1.3 pts
Smoking
18.4%
U.S. 12.8% +5.6 pts
Uninsured (18-64)
7.2%
U.S. 11.1% -3.9 pts
ZIP codes in Williamson
1 in or overlapping Williamson. Population shown
Cities near Williamson
| Name | Distance | Land area (sq mi) |
|---|---|---|
| CharitonCity | 5.4 mi | 3.8 |
| RussellCity | 8 mi | 1 |
| Melcher-DallasCity | 9.6 mi | 1 |
| LaconaCity | 9.6 mi | 0.3 |
| LucasCity | 11 mi | 1 |
| MelroseCity | 13 mi | 1 |
| DerbyCity | 15 mi | 0.3 |
| MillertonCity | 17 mi | 0.3 |
| MiloCity | 17 mi | 0.6 |
| MarysvilleCity | 17 mi | 0.5 |
| KnoxvilleCity | 18 mi | 4.6 |
| WoodburnCity | 18 mi | 0.6 |
| LoviliaCity | 18 mi | 0.5 |
| HamiltonCity | 19 mi | 0.5 |
| HumestonCity | 20 mi | 0.6 |
| SandyvilleCity | 21 mi | 0.5 |
Frequently asked questions
- What county is Williamson, IA in?
- Williamson is in Lucas County, Iowa.
- What ZIP codes are in Williamson, IA?
- ZIP codes in or overlapping Williamson include 50272.
- What is the population of Williamson, IA?
- About 190 people live in Williamson, based on American Community Survey 5-year estimates.
- What cities are near Williamson?
- Nearby places include Chariton (5.4 mi), Russell (8 mi), Melcher-Dallas (9.6 mi), Lacona (9.6 mi), Lucas (11 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023