What city is ZIP code 63631?

ZIP code 63631 is in Caledonia, MO (Washington County).

What county is ZIP code 63631 in?

ZIP code 63631 is mostly in Washington County, Missouri.

How many people live in ZIP code 63631?

About 544 people live in the 63631 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 63631

Caledonia, MO, Washington County

Population

544

Land area

41.2sq mi

People per sq mi

City

Caledonia

ZIP 63631 and nearby ZIP codes

Full map

ZIP 63631 at a glance

ZIP 63631 (Caledonia) is 85% less dense than Missouri as a whole.
Households here earn a median of $74,211 a year, 5% more than the Missouri figure of $70,702.
A typical owner-occupied home is valued at $127,500 (45% below Missouri) and median rent is $790 a month.

Local data for ZIP 63631

Counts from official public data

Housing and community stats

ZIP 63631, American Community Survey 2020-2024

Full profile

Median household income

$74,211

Poverty rate

9.7%

Median home value

$127,500

Median rent

$790/mo

Homeownership

82.7%

Bachelor's or higher

14.4%

Median age

56.1

Average commute

47.4 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

$1.9M annual payroll

PPP loans

$569K

63 loans

Campaign donations

$100

0% D, 100% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 63631, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: heat wave

Storm events since 1996

415

Countywide, mostly hail

Flood insurance policies

0.1% of homes, county

July high / Jan low

86° / 21°F

45.5 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 63631, CDC PLACES estimates

All 40 measures

Obesity

41.3%

U.S. 33.3% +8.0 pts

Diabetes

14.8%

U.S. 12.1% +2.7 pts

Smoking

21.4%

U.S. 12.8% +8.6 pts

Uninsured (18-64)

9.8%

U.S. 11.1% -1.3 pts

Frequently asked questions

What city is ZIP code 63631?: ZIP code 63631 is in Caledonia, MO (Washington County).
What county is ZIP code 63631 in?: ZIP code 63631 is mostly in Washington County, Missouri.
How many people live in ZIP code 63631?: About 544 people live in the 63631 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.