PlainZIP

Caledonia, MO · standard

ZIP Code 63631

Washington County, Missouri - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

849
8/sq mi
$74,211
Median income
$127,500
Median home value
14.4%
Bachelor's or higher

The verdict

Caledonia pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.

Top 46%
household income, US ZIPs
19th pct
home value, US ZIPs
8
people per sq mi
83%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 63631 against every reporting US ZIP.

ZIP code 63631 is a sparsely populated ZIP (a standard USPS delivery area) in Caledonia, Washington County, Missouri, home to just 849 residents across 107.5 square miles, a density of 8 people per square mile, in the Chicago time zone.

ZIP 63631 lands in the middle-income range, with a median household income of $74,211 (11% above the Missouri average), while per-capita income is $33,161. Local economic indicators show a 9.7% poverty rate alongside 1.5% unemployment. Median home value sits at $127,500 (33% below the state average), median rent at $790 a month, and owner-occupancy at 82.7%.

Formal educational attainment runs low here: just 14.4% of adults hold a bachelor's degree or higher, the median age is 56.1, and the average commute is -. To put 63631 in local context, 5 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Washington County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 63631, Caledonia, MO · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

849

Population

107.5

Area (sq mi)

8

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 63631?

56.1

Median Age

46.0%

Male

54.0%

Female

1.3%

Foreign-Born

White 95.2%
African American 0.0%
Asian 0.4%
American Indian or Alaska Native 1.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.3%
Hispanic or Latino 0.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$74,211

Median Household Income

+11% vs state

$33,161

Per Capita Income

9.7%

Poverty Rate

1.5%

Unemployment Rate

How ZIP 63631 ranks nationally

Caledonia, MO household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$74,211 Top 46% higher than 54% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.4%
Bachelor's Degree or Higher 14.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

308

Total Housing Units

266

Occupied Units

42

Vacant Units

2.05

Avg Household Size

Occupancy Type

Owner 82.7%
Renter 17.3%

$127,500

Median Home Value

-33% vs state

$790

Median Rent

1956

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 15 business establishments in ZIP 63631, employing approximately 87 people with a combined annual payroll of $1,850,000.

15

Businesses

87

Employees

$1.9M

Annual Payroll

2

Industry Sectors

Industry Establishments % of Total
Construction 4 26.7%
Retail trade 3 20.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 63631 vs 63624 →

ZIP 63631 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 63631 ranks #5 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 63631 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 63631 ranks the highest of 6 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
63624 Bismarck, MO 3,757 7.8 mi
63622 Belgrade, MO 1,011 6.9 mi
63648 Irondale, MO 1,628 7.1 mi
63623 Belleview, MO 882 7.6 mi
63663 Pilot Knob, MO 723 11.2 mi

More ZIP Codes in Washington County

63080 standard
Sullivan, MO
Pop: 13,987
63664 standard
Potosi, MO
Pop: 8,920
63660 standard
Mineral Point, MO
Pop: 4,276
63630 standard
Cadet, MO
Pop: 4,062
63648 standard
Irondale, MO
Pop: 1,628
63071 standard
Richwoods, MO
Pop: 1,103

Related Areas

Washington County Caledonia, MO Missouri

Frequently Asked Questions

What county is ZIP code 63631 in? ▼
ZIP code 63631 (Caledonia) is located in Washington County, Missouri. Washington County contains multiple ZIP codes, see the full list at /counties/washington-mo.
What is the population of ZIP code 63631? ▼
ZIP code 63631 in Caledonia, MO has a population of 849 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 63631? ▼
The median household income in ZIP 63631 is $74,211, which is 3% below the national average of $76,288.
What is the average home value in ZIP 63631? ▼
The median home value in ZIP 63631 is $127,500, which is 54% below the national average of $278,155.
What is the demographic makeup of ZIP 63631? ▼
The largest racial group in ZIP 63631 is White at 95.2%. Hispanic or Latino residents make up 0.4% of the population.
How many businesses are in ZIP code 63631? ▼
ZIP code 63631 has 15 business establishments employing approximately 87 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 63631? ▼
In ZIP code 63631, 66.4% of residents aged 25+ have a high school diploma or higher, and 14.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 63631? ▼
In ZIP code 63631, approximately 82.7% of occupied housing units are owner-occupied and 17.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 63631? ▼
The poverty rate in ZIP code 63631 is 9.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.