PlainZIP

Ballwin, MO · standard

ZIP Code 63021

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

56,261
986/sq mi
$120,177
Median income
$349,500
Median home value
63.0%
Bachelor's or higher

The verdict

Ballwin pairs a top-decile household income with above-median home values, in a low-density, homeowner-dominated and unusually populous area.

Top 10%
household income, US ZIPs
Top 26%
home value, US ZIPs
986
people per sq mi
81%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 63021 against every reporting US ZIP.

ZIP code 63021 is a densely settled ZIP (a standard USPS delivery area) in Ballwin, St. Louis County, Missouri, with 56,261 residents across 57.1 square miles, a density of 986 people per square mile, in the Chicago time zone.

ZIP 63021 skews affluent, with a median household income of $120,177 (80% above the Missouri average), while per-capita income is $56,249. The poverty rate stands at 5.4% and the unemployment rate at 4.1%. On housing, the median home value is $349,500 (83% above the state average) with median rent at $1,423 per month, and 80.7% of occupied units are owner-occupied.

This is a highly-educated ZIP: 63.0% of adults hold a bachelor's degree or higher, the median age is 40.7, and the average commute is 24 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing St. Louis County, so you can benchmark 63021 against its immediate geography rather than a national average alone.

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 →

Top industries in ZIP 63021

Top 5 sectors by establishment count in Ballwin, MO

Which industries have the most business establishments in ZIP 63021.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

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 63021, Ballwin, 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

56,261

Population

57.1

Area (sq mi)

986

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 63021?

40.7

Median Age

48.9%

Male

51.1%

Female

10.7%

Foreign-Born

White 76.3%
African American 2.6%
Asian 10.3%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 9.5%
Hispanic or Latino 5.6%

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?

$120,177

Median Household Income

+80% vs state

$56,249

Per Capita Income

5.4%

Poverty Rate

4.1%

Unemployment Rate

23.9 min

Mean Commute Time

How ZIP 63021 ranks nationally

Ballwin, MO household income vs. every US ZIP code

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

$120,177 Top 10% higher than 90% 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%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $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 76.3%
Bachelor's Degree or Higher 63.0%

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

What does housing look like?

22,942

Total Housing Units

22,131

Occupied Units

811

Vacant Units

2.50

Avg Household Size

Occupancy Type

Owner 80.7%
Renter 19.3%

$349,500

Median Home Value

+83% vs state

$1,423

Median Rent

1983

Median Year Built

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

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.8%

YoY Change (2024)

230

HPI Index (2000 = 100)

+130%

Total Change Since 2000

Home values in ZIP 63021 have increased 7.8% over the past year (2024). Since 2000, this ZIP has seen +130% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.9% 164
2021 +8.4% 178
2022 +13.4% 202
2023 +5.9% 213
2024 +7.8% 230

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 725 business establishments in ZIP 63021, employing approximately 6,403 people with a combined annual payroll of $334,131,000.

725

Businesses

6,403

Employees

$334.1M

Annual Payroll

17

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 132 18.2%
Health care and social assistance 93 12.8%
Construction 75 10.3%
Administrative and support and waste management and remediation services 64 8.8%
Other services (except public administration) 54 7.5%
Finance and insurance 48 6.6%
Retail trade 46 6.3%
Real estate and rental and leasing 45 6.2%
Wholesale trade 44 6.1%
Accommodation and food services 31 4.3%
Transportation and warehousing 19 2.6%
Educational services 18 2.5%
Arts, entertainment, and recreation 15 2.1%
Manufacturing 14 1.9%
Information 12 1.7%
Management of companies and enterprises 7 1.0%
Industries not classified 5 0.7%

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 63021 vs 63011 →

ZIP 63021 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 63021 ranks the most populous - useful context the national average alone can't give.

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

ZIP 63021 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 63021 ranks #8 of 9 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
63011 Ballwin, MO 36,347 2.5 mi
63088 Valley Park, MO 8,269 2.8 mi
63017 Chesterfield, MO 41,470 5.7 mi
63040 Wildwood, MO 8,512 4.8 mi
63049 High Ridge, MO 15,896 6.2 mi
63122 Saint Louis, MO 38,495 6.9 mi
63038 Wildwood, MO 6,914 6.8 mi
63131 Saint Louis, MO 16,769 6.5 mi
63025 Eureka, MO 13,854 6.7 mi
63026 Fenton, MO 44,124 6.5 mi

More ZIP Codes in St. Louis County

63129 standard
Saint Louis, MO
Pop: 52,718
63123 standard
Saint Louis, MO
Pop: 49,308
63136 standard
Saint Louis, MO
Pop: 48,560
63031 standard
Florissant, MO
Pop: 48,212
63026 standard
Fenton, MO
Pop: 44,124
63033 standard
Florissant, MO
Pop: 43,000

Related Areas

St. Louis County Ballwin, MO Missouri

Frequently Asked Questions

What county is ZIP code 63021 in? ▼
ZIP code 63021 (Ballwin) is located in St. Louis County, Missouri. St. Louis County contains multiple ZIP codes, see the full list at /counties/st-louis-mo-29189.
What is the population of ZIP code 63021? ▼
ZIP code 63021 in Ballwin, MO has a population of 56,261 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 63021? ▼
The median household income in ZIP 63021 is $120,177, which is 58% above the national average of $76,288.
What is the average home value in ZIP 63021? ▼
The median home value in ZIP 63021 is $349,500, which is 26% above the national average of $278,155.
What is the demographic makeup of ZIP 63021? ▼
The largest racial group in ZIP 63021 is White at 76.3%. Hispanic or Latino residents make up 5.6% of the population.
How many businesses are in ZIP code 63021? ▼
ZIP code 63021 has 725 business establishments employing approximately 6,403 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 63021? ▼
The top industries by establishment count in ZIP 63021 are: Professional, scientific, and technical services (132), Health care and social assistance (93), Construction (75). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 63021? ▼
According to the FHFA House Price Index, home values in ZIP 63021 increased by 7.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 130%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 63021? ▼
In ZIP code 63021, 76.3% of residents aged 25+ have a high school diploma or higher, and 63.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 63021? ▼
The mean commute time for workers in ZIP code 63021 is 23.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 63021? ▼
In ZIP code 63021, approximately 80.7% of occupied housing units are owner-occupied and 19.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 63021? ▼
The poverty rate in ZIP code 63021 is 5.4% 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.