US ZIP Code
63664

Potosi, MO

Washington County  ·  Missouri

● Active
👥 9,060 Population
💰 $52,071 Median HH Income
▼ 32% below avg ↑ 25% since 2019
🎂 39.9 Median Age ↓ 4% since 2019
🏠 $122,800 Median Home Value
▼ 56% below avg ↑ 24% since 2019
🎓 27.5% College Grads
▼ 29% below avg
📊 3.6% Unemployment
▼ 26% below avg ↓ 59% since 2019
ZIP Code Details
ZIP Code63664
CityPotosi
StateMissouri (MO)
CountyWashington County
Area Code235/573
Elevation912 ft
Latitude37.917196
Longitude-90.9142
TimezoneChicago (DST)
FIPS29221
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.7% (4,589) Female 49.4% (4,471) ♀

Race & Ethnicity

White: 90.5%Hispanic: 1.7%Black: 0.2%Asian: 0.2%Other: 6.8%Race
White90.5%
Hispanic1.7%
Black0.2%
Asian0.2%
Other6.8%

Age Breakdown

Under 5
6%
5–17
17%
18–24
9%
25–44
22%
45–64
25%
65+
8%

Key Indicators

Median Age39.9 yrs ↓ 4% since 2019
Avg Household Size2.54
Below Poverty18.7% ▲ 87% above avg
College Grads27.5% ▼ 29% below avg
Unemployment3.6% ▼ 26% below avg
No HS Diploma13 (0.2%)
HS Graduate2,345 (44.3%)
Some College788 (14.9%)
Associates693 (13.1%)
Bachelors469 (8.9%)
Graduate Degree984 (18.6%)

Education

No HS: 0.2%HS Grad: 44.3%Some College: 14.9%Associates: 13.1%Bachelors: 8.9%Graduate: 18.6%Edu
No HS0.2%
HS Grad44.3%
Some College14.9%
Associates13.1%
Bachelors8.9%
Graduate18.6%
Housing & Income

Housing Tenure

Owner: 71.6%Renter: 28.4%Tenure
Owner71.6%
Renter28.4%

Home Value Distribution

Under $50k
21%
$50k–100k
20%
$100k–150k
14%
$150k–200k
12%
$200k–300k
13%
$300k–500k
11%
Over $500k
9%

Financials

Median HH Income$52,071 ▼ 32% below avg ↑ 25% since 2019
Median Home Value$122,800 ▼ 56% below avg ↑ 24% since 2019
Home/Income Ratio2.4x (nat avg ~3.5x)
Median Rent$659/mo ↑ 23% since 2019
Total Units3,961
Vacant Units465
Avg HH Size2.54

Income Distribution

Under $25k
26%
$25k–50k
18%
$50k–75k
19%
$75k–100k
16%
$100k–150k
13%
$150k–200k
6%
Over $200k
2%
Employment & Commute

How People Get to Work

Drove Alone
95%
Public Transit
0%
Walked
1%
Work From Home
5%

Commute Time

Under 15 min
30%
15–30 min
23%
30–45 min
15%
Over 45 min
31%
Housing Stock

Year Built

Before 1940
1%
1940s–1950s
11%
1960s–1970s
14%
1980s–1990s
17%
2000+
57%

Summary

Total Units3,961
Vacant465
Owner Occupied71.6%
Renter Occupied28.4%
Avg HH Size2.54
Frequently Asked Questions
ZIP code 63664 is in Potosi, MO, in Washington County.
ZIP code 63664 is located in Missouri (MO).
ZIP code 63664 is in Washington County, MO.
ZIP 63664 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 63664 is 9,060 people (ACS 2023).
The median household income in ZIP code 63664 is $52,071 (ACS 2023).
The median home value in ZIP 63664 is $122,800 (ACS 2023).
About ZIP Code 63664

ZIP code 63664 is located in Potosi, Missouri, within Washington County. With a population of 9,060, this is a lightly populated ZIP code with a middle-aged community — the median age is 39.9 years. Economically, 63664 is a working-class ZIP code: the median household income of $52,071 is below the national average.

Real estate in ZIP code 63664 represents one of the more affordable housing markets in the country. The median home value of $122,800 is well below the national average. Renters can expect to pay around $659 per month in median rent. Homeownership is strong here — 71.6% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 24% since 2019.

The population of 63664 is primarily White (90.54%). Residents are moderately educated — 27.5% hold a bachelor's degree or higher, which is below the national average. Poverty affects some residents at 18.7%. Household income has grown by 25% since 2019.

The unemployment rate in 63664 stands at 3.6%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 81%.

Overall, ZIP code 63664 in Potosi, MO is characterized as working-class, moderately educated, a middle-aged community, and predominantly owner-occupied. With 9,060 residents, a median household income of $52,071, and a median home value of $122,800, it offers a clear picture of life in this part of Missouri.