63631 ZIP Code — Caledonia, MO

Washington County, Missouri

ZIP code 63631 is located in Caledonia, Missouri, within Washington County. It covers approximately 41.24 square miles and serves a population of 774 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 573.

About ZIP code 63631

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $145,700. Owner-occupancy is high at 84%, well above the national average.

Median household income is $71,174. 43% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with education and healthcare as the leading industry. An above-average commute of 39 minutes suggests many residents work outside the immediate area.

College attainment at 12% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (25%) compared to national benchmarks.

Notable community characteristics include disability rates above the national average at 28%.

Overall, ZIP code 63631 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

774
population
41.24
sq mi land
Standard
ZIP type
Central (CT)
timezone
63631 ZIP code map
Cities in ZIP code 63631

Below are the cities the US Postal Service accepts for ZIP code 63631. Using any city not on this list may result in mail delivery delays.

City Status
Caledonia Preferred
Nearby ZIP codes
63648 Irondale (2.6 mi) 63656 Middle Brook (6.2 mi) 63624 Bismarck (6.9 mi) 63622 Belgrade (9.1 mi) 63660 Mineral Point (9.4 mi) 63653 Leadwood (9.7 mi) 63601 Park Hills (9.9 mi) 63650 Ironton (11.5 mi) 63637 Doe Run (13 mi) 63630 Cadet (16.2 mi) 63664 Potosi (16.8 mi) 63628 Bonne Terre (17.6 mi)
Demographics updated 05/2026
Population
Total population 774
Population density 19 / sq mi
State FIPS 29
County FIPS 221
Geography
Land area 41.24 sq mi
Water area 0.03 sq mi
Latitude 37.7750
Longitude -90.7279
Timezone Central (CT)
Area code 573
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 31.5% 56.8% 43.8%
$50k – $100k 50.0% 32.4% 31.5%
$100k – $200k 6.5% 9.1% 19.5%
Over $200k 12.0% 1.7% 5.2%

Demographics & statistics

774
Population
19
People per sq mi
50.8
Median age
$71,174
Median household income
$35,013
Per capita income
$145,700
Median home value
$793
Median monthly rent
83.9%
Home ownership
10.1%
Poverty rate
0.0%
Unemployment
355
Housing units
12.4%
Bachelor's or higher

Age distribution

Male Female
12
Under 5
13
14
5–9
15
2
10–14
2
5
15–19
6
28
20–24
31
38
25–34
42
56
35–44
62
58
45–54
63
66
55–59
72
23
60–64
25
22
65–74
25
33
75–84
36
12
85+
13
← Male
Female →

Age summary

GroupCount%
Under 18668.5%
18 and over70891.5%
65 and over14118.2%
Median age50.8 years

Race & ethnicity

White 95.3%
Two or more races 2.8%
Hispanic or Latino 1.9%
GroupCount%
White75295.3%
Two or more races222.8%
Hispanic or Latino151.9%

Household income

Income range This ZIP County avg State avg
Under $50k 31.5% 56.8% 43.8%
$50k – $100k 50.0% 32.4% 31.5%
$100k – $200k 6.5% 9.1% 19.5%
Over $200k 12.0% 1.7% 5.2%
Under $10k 3.2%
$10k–$15k 6.7%
$15k–$25k 6.5%
$25k–$35k 2.6%
$35k–$50k 16.4%
$50k–$75k 19.6%
$75k–$100k 33.1%
$100k–$150k 1.5%
$200k+ 10.3%
Range% of households
Under $10k3.2%
$10k–$15k6.7%
$15k–$25k6.5%
$25k–$35k2.6%
$35k–$50k16.4%
$50k–$75k19.6%
$75k–$100k33.1%
$100k–$150k1.5%
$200k+10.3%
Median income$71,174

Housing

Home values

Under $50k 24.8%
$50k–$100k 12.2%
$100k–$150k 15.4%
$150k–$200k 22.0%
$200k–$300k 9.8%
$300k–$500k 15.7%

Housing overview

MetricValue
Median home value$145,700
Median rent / month$793
Owner occupied83.9%
Renter occupied16.1%
Vacant16.8%
Single-family detached83.9%
Large apartment buildings0.0%
Mobile homes13.7%
Median rooms5.7
Avg household size (owned)2.26

Year built

Era%
2020 or later0.5%
2010–20191.2%
2000–20092.2%
1990–199917.3%
1980–19898.5%
1970–197916.1%
1960–196915.4%
1950–195911.0%
1940–19498.3%
1939 or earlier19.5%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom8.8%
2 bedrooms33.9%
3 bedrooms30.0%
4 bedrooms17.6%
5+ bedrooms9.8%

Vehicles per household

Vehicles% of households
No vehicle5.9%
1 vehicle18.2%
2 vehicles25.2%
3 or more50.7%

Heating fuel

Fuel type%
Utility gas1.2%
Electricity40.8%
Propane / LP gas36.7%
Wood21.4%

Households & families

Household typeCount%
Married-couple family20961.3%
Cohabiting couple51.5%
Male householder, no spouse5716.7%
Female householder, no spouse7020.5%
Households with children under 184312.6%
Households with seniors (65+)11232.8%
Average household size2.27

Marital status

StatusMaleFemale
Never married16.8%21.1%
Married63.0%57.1%
Separated1.8%1.8%
Widowed2.4%2.3%
Divorced15.9%17.7%

Education

Less than 9th grade 3.4%
Some HS, no diploma 9.8%
HS graduate 47.2%
Some college, no degree 12.5%
Associate's degree 14.7%
Bachelor's degree 5.4%
Graduate / professional 7.0%
Metric%
HS diploma or higher86.8%
Bachelor's or higher12.4%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool2217.6%
Kindergarten118.8%
Elementary school1512.0%
High school1411.2%
College / grad school6350.4%

Employment

Industry of employment

Finance & real estate 21.1%
Education & healthcare 16.4%
Construction 13.1%
Retail trade 13.1%
Transportation & utilities 10.1%
Manufacturing 7.4%
Agriculture & mining 6.0%
Other services 3.9%
Arts, food & hospitality 3.6%
Professional & management 2.4%
Public administration 2.4%
Wholesale trade 0.6%

Occupation

Category%
Management, business & arts22.9%
Service8.3%
Sales & office46.1%
Natural resources & construction13.1%
Production & transportation9.5%

Employment type

Type%
Private sector79.8%
Government11.6%
Self-employed8.6%
Unpaid family workers0.0%

Commute

Method%
Drive alone84.4%
Carpool12.6%
Public transit0.0%
Walk0.0%
Work from home1.2%
Other means1.8%
Avg commute (minutes)39.4

Poverty

All people 10.1%
Under 18 years 19.7%
18 and over 9.2%
Married-couple families 9.6%
Female-led households 3.9%

Income support

Source% of households
Social Security42.5%
Retirement income25.5%
Supplemental Security16.1%
Cash public assistance8.5%
Food stamps / SNAP15.8%

Health indicators

Condition%
Obesity40.5%
High blood pressure35.6%
High cholesterol36.8%
Diabetes11.6%
Heart disease8.0%
Stroke3.6%
Asthma10.0%
Arthritis30.7%
Kidney disease3.2%
Pulmonary disease10.1%
Cancer7.0%
Behavior / access%
Smoking24.8%
Binge drinking16.6%
No physical activity28.4%
Less than 7 hrs sleep34.4%
Depression25.0%
Fair or poor health18.7%
Poor mental health16.5%
Poor physical health13.5%
No health insurance16.9%
Visited doctor (checkup)73.6%
Visited dentist55.9%
Cholesterol screening88.4%
Teeth loss20.6%

Veterans & disability

VeteransCount%
Civilian veterans365.1%
Disability%
Any disability28.4%
Under 1810.6%
18–64 years23.5%
65 and over56.7%

Health insurance coverage

Type%
Private insurance66.7%
Public insurance34.8%
No insurance9.3%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only74996.8%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)77299.7%
Born in same state76999.4%
Born in different state65684.8%
Foreign born30.4%
Naturalized citizen20.3%
Not a US citizen2100.0%

Ancestry

AncestryCount%
Italian13116.9%
French8811.4%
AncestryCount%
Arab384.9%

Technology access

Metric% of households
Computer access44.1%
Internet access88.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 63631

What city is ZIP code 63631 in?

ZIP code 63631 is primarily assigned to Caledonia, Missouri.

What county is ZIP code 63631 in?

ZIP code 63631 falls within Washington County, Missouri.

How educated is the population of ZIP code 63631?

12% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 63631 mostly owner-occupied?

84% of occupied units in ZIP code 63631 are owner-occupied, well above the national average.

Does ZIP code 63631 have a large retiree population?

43% of households in ZIP code 63631 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 63631?

The median home value in ZIP code 63631 is $145,700.

What timezone is ZIP code 63631 in?

ZIP code 63631 observes the CST timezone.

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