Housing data for Arnold, MO

Arnold, MO has an estimated 20,956 residents and 8,982 homes (US Census Bureau, 2020–2024 American Community Survey).

It is a city in Jefferson County.

20.2% of households rent.

The median gross rent is $1,112 a month.

Its population shrank measurably since 2015–2019 (−0.9%).

Figures last updated on .

Residents
20,956 (±52)
Housing units
8,982 (±329)
Households that rent
20.2%
Median gross rent
$1,112
Residents since 2015–2019
−0.9%

What stands out in Arnold

Homes built before 1980: 54.3% (±6.2 points) in Arnold, higher than in Jefferson County (40.5%).

Working from home: 8.1% (±2.0 points) in Arnold, lower than in Jefferson County (11.5%).

Households that moved in since 2020: 14.8% (±3.0 points) in Arnold, lower than in Jefferson County (19.6%).

Median gross rent: $1,112 (±$60) in Arnold, higher than in Jefferson County ($979).

Housing in Arnold at a glance

Arnold against Jefferson County, its state and the nation

Estimate (90% margin of error)
ArnoldJefferson CountyMissouriUnited States
Residents20,956 (±52)229,458 (exact)6,191,814 (exact)334,922,499
Housing units8,982 (±329)93,955 (±84)2,825,287 (±1,043)143,775,355
Households that rent20.2% (±3.9 points)17.8% (±1.1 points)31.9% (±0.2 points)34.8%
Median gross rent$1,112 (±$60)$979 (±$20)$1,033 (±$6)$1,413
Median household income$78,370 (±$6,883)$82,851 (±$2,327)$70,702 (±$325)$80,734
Median home value$220,000 (±$8,959)$237,200 (±$3,773)$230,300 (±$880)$332,700
Median real estate taxes (a year)$1,729 (±$153)$1,906 (±$35)$1,948 (±$11)$3,119
Built before 198054.3% (±6.2 points)40.5% (±1.7 points)52.8% (±0.4 points)49.7%
Average commute27.2 minutes (±1.4)30.6 minutes (±0.6)23.5 minutes (±0.1)26.4 minutes
Households with broadband91.4% (±3.6 points)91.7% (±0.9 points)89.3% (±0.2 points)91.0%
Median age of residents39.7 years (±2.5)40.3 years (±0.3)39.0 years (±0.2)38.9 years

Arnold covers 11.5 square miles of land, about 1,818 residents per square mile (Census Bureau Gazetteer).

How Arnold has changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
2015–20192020–2024Amount of changeVerdict
Residents21,146 (±26)20,956 (±52)−0.9%Measurable decrease
Housing units8,761 (±326)8,982 (±329)+2.5%Not a measurable change
Median gross rent$955 (±$47)$1,112 (±$60)+16.4%No measurable change after inflation
Median home value$157,600 (±$4,443)$220,000 (±$8,959)+39.6%Up after inflation
Median household income$66,670 (±$3,318)$78,370 (±$6,883)+17.5%No measurable change after inflation
Median owner cost with a mortgage$1,315 (±$57)$1,495 (±$145)+13.7%No measurable change after inflation
Median real estate taxes$1,419 (±$40)$1,729 (±$153)+21.8%No measurable change after inflation
Households that rent26.7% (±4.0 points)20.2% (±3.9 points)−6.5 percentage pointsMeasurable decrease
Rental vacancy rate5.1% (±3.8 points)3.4% (±3.9 points)−1.7 percentage pointsNot a measurable change

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Crime reported to police in Arnold

In 2025, the Arnold Police Department reported 76 violent and 831 property crimes per 100,000 residents to the FBI.

Across Jefferson County, the departments that report recorded 215 violent and 758 property crimes per 100,000 residents that year.

ZIP codes in Arnold

ZIP Code Tabulation Areas that cover this place (2020–2024 estimates)
ZIP codeShare of the ZIP’s land in this placeResidentsMedian gross rentMedian home valueMedian household income
6301054%34,478$1,088$224,300$79,784

A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.

Places near Arnold

Nearest places with Census figures, by straight-line distance
PlaceDistanceMedian gross rentMedian home valueHouseholds that rent
Oakville3.2 mi$1,091$318,60014.0%
Kimmswick4.2 mi$1,250$226,80015.4%
Imperial5.1 mi$1,446$228,7007.4%
Concord6.0 mi$1,215$303,60014.0%
Mehlville6.1 mi$1,066$218,40034.0%
Barnhart6.4 mi$1,565$229,20010.4%
Sappington6.9 mi$1,241$297,60025.5%
Green Park6.9 mi$992$238,80011.6%

Places in Missouri most like Arnold

PlaceMedian gross rentMedian home valueMedian household incomeHouseholds that rent
Murphy$1,056$184,700$72,23319.6%
Camden Point$990$246,300$76,25020.0%
Archie$1,005$192,600$68,75024.0%
Crystal City$1,062$185,800$72,59823.8%
Lawson$1,005$186,000$65,94127.7%
Gray Summit$1,043$170,500$65,66725.1%

Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across Missouri.

HUD Fair Market Rent for Arnold, fiscal year 2027

St. Louis, MO-IL HUD Metro FMR Area, dollars a month
Studio1 bedroom2 bedrooms3 bedrooms4 bedrooms
$1,064$1,104$1,349$1,731$1,997

HUD also publishes a Small Area Fair Market Rent for each ZIP code in the area; the Fair Market Rent page for this place lists its ZIP codes.

HUD income limits for Arnold, fiscal year 2026

St. Louis, MO-IL HUD Metro FMR Area, annual household income
Household sizeExtremely low (30%)Very low (50%)Low (80%)
1 person$23,850$39,750$63,600
2 people$27,250$45,400$72,650
3 people$30,650$51,100$81,750
4 people$34,050$56,750$90,800
5 people$38,680$61,300$98,100
6 people$44,360$65,850$105,350
7 people$50,040$70,400$112,600
8 people$55,720$74,950$119,900

These are the limits HUD sets for its housing programs in the St. Louis, MO-IL HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $113,500.

A program can use its own limits; tax-credit and local programs often do.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Arnold

What is the average rent in Arnold, MO?

The Census Bureau publishes the median rather than the average: the median gross rent in Arnold is $1,112 (±$60) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.

How much is a one-bedroom apartment in Arnold?

The median gross rent for a one-bedroom home in Arnold, MO is $918 (±$117) a month (2020–2024 American Community Survey).

Are renters in Arnold rent-burdened?

36.2% of renting households in Arnold pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).

How many renters are there in Arnold?

Arnold has an estimated 1,695 (±322) renting households, 20.2% of its occupied homes (2020–2024 American Community Survey).

What is the median household income in Arnold?

The median household income in Arnold is $78,370 (±$6,883) a year (2020–2024 American Community Survey).

What is the average home value in Arnold, MO?

The Census Bureau publishes the median: $220,000 (±$8,959) for owner-occupied homes in Arnold (2020–2024 American Community Survey).

Is Arnold growing?

In Arnold, the number of residents went from 21,146 in 2015–2019 to 20,956 in 2020–2024 (−0.9%), a measurable decrease.

What ZIP codes are in Arnold?

The ZIP code that covers Arnold is 63010.

What is the median rent in ZIP code 63010?

The median gross rent in ZIP Code Tabulation Area 63010 is $1,088 (±$55) a month (2020–2024 American Community Survey).

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Arnold city, Missouri (place:01972, in state:29).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.

Figures last updated on .

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