63664 ZIP Code — Potosi, MO

Washington County, Missouri

ZIP code 63664 is located in Potosi, Missouri, within Washington County. It covers approximately 287.67 square miles and serves a population of 9,039 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 573.

About ZIP code 63664

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $114,400. Owner-occupancy is high at 77%, well above the national average.

Median household income is $53,967. SNAP benefit usage at 17% of households reflects economic stress in the area. 41% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 35 minutes is near the national average.

College attainment at 16% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (26%) compared to national benchmarks.

Notable community characteristics include disability rates above the national average at 27%.

Overall, ZIP code 63664 reflects a community defined by a trades-oriented workforce, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

9,039

population

287.67

sq mi land

Standard

ZIP type

Central (CT)

timezone

63664 ZIP code map

Cities in ZIP code 63664

Below are the cities the US Postal Service accepts for ZIP code 63664. Using any city not on this list may result in mail delivery delays.

City	Status
Potosi	Preferred

Nearby ZIP codes

63630 Cadet (10.1 mi) 63071 Richwoods (11.6 mi) 63622 Belgrade (11.6 mi) 63660 Mineral Point (11.9 mi) 63030 Fletcher (15 mi) 63648 Irondale (15.1 mi) 63631 Caledonia (16.8 mi) 63653 Leadwood (19 mi) 65441 Bourbon (19.3 mi)

Demographics updated 05/2026

Population
Total population	9,039
Population density	31 / sq mi
State FIPS	29
County FIPS	221

Geography
Land area	287.67 sq mi
Water area	1.01 sq mi
Latitude	37.9728
Longitude	-90.9077
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	54.8%	56.8%	43.8%
$50k – $100k	33.1%	32.4%	31.5%
$100k – $200k	10.2%	9.1%	19.5%
Over $200k	1.9%	1.7%	5.2%

Demographics & statistics

9,039

Population

People per sq mi

40.1

Median age

$53,967

Median household income

$26,861

Per capita income

$114,400

Median home value

$660

Median monthly rent

76.6%

Home ownership

14.1%

Poverty rate

3.7%

Unemployment

3,121

Housing units

16.1%

Bachelor's or higher

Age distribution

Male Female

211

Under 5

217

505

5–9

521

196

10–14

202

289

15–19

298

268

20–24

276

497

25–34

512

468

35–44

483

548

45–54

565

247

55–59

255

312

60–64

321

516

65–74

532

288

75–84

296

106

85+

110

← Male

Female →

Age summary

Group	Count	%
Under 18	2,177	24.1%
18 and over	6,862	75.9%
65 and over	1,848	20.4%
Median age	40.1 years

Race & ethnicity

White 91.3%

Two or more races 5.9%

Hispanic or Latino 1.5%

Other race 0.7%

Native Hawaiian / Pacific Islander 0.4%

Black or African American 0.2%

Group	Count	%
White	8,381	91.3%
Two or more races	544	5.9%
Hispanic or Latino	142	1.5%
Other race	61	0.7%
Native Hawaiian / Pacific Islander	35	0.4%
Black or African American	15	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.8%	56.8%	43.8%
$50k – $100k	33.1%	32.4%	31.5%
$100k – $200k	10.2%	9.1%	19.5%
Over $200k	1.9%	1.7%	5.2%

Under $10k 5.0%

$10k–$15k 6.5%

$15k–$25k 8.9%

$25k–$35k 10.1%

$35k–$50k 16.8%

$50k–$75k 19.3%

$75k–$100k 14.7%

$100k–$150k 11.8%

$150k–$200k 5.2%

$200k+ 1.7%

Range	% of households
Under $10k	5.0%
$10k–$15k	6.5%
$15k–$25k	8.9%
$25k–$35k	10.1%
$35k–$50k	16.8%
$50k–$75k	19.3%
$75k–$100k	14.7%
$100k–$150k	11.8%
$150k–$200k	5.2%
$200k+	1.7%
Median income	$53,967

Housing

Home values

Under $50k 22.6%

$50k–$100k 19.3%

$100k–$150k 18.8%

$150k–$200k 11.0%

$200k–$300k 8.7%

$300k–$500k 10.0%

$500k–$1M 9.5%

Housing overview

Metric	Value
Median home value	$114,400
Median rent / month	$660
Owner occupied	76.6%
Renter occupied	23.4%
Vacant	12.4%
Single-family detached	67.5%
Large apartment buildings	0.1%
Mobile homes	19.8%
Median rooms	5.3
Avg household size (owned)	2.68

Year built

Era	%
2020 or later	0.4%
2010–2019	7.0%
2000–2009	13.8%
1990–1999	12.3%
1980–1989	13.1%
1970–1979	16.5%
1960–1969	12.8%
1950–1959	11.1%
1940–1949	4.4%
1939 or earlier	8.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	5.9%
2 bedrooms	35.2%
3 bedrooms	44.9%
4 bedrooms	9.2%
5+ bedrooms	4.0%

Vehicles per household

Vehicles	% of households
No vehicle	8.0%
1 vehicle	23.7%
2 vehicles	35.6%
3 or more	32.7%

Heating fuel

Fuel type	%
Utility gas	19.2%
Electricity	57.3%
Propane / LP gas	11.3%
Wood	12.2%

Households & families

Household type	Count	%
Married-couple family	1,804	52.4%
Cohabiting couple	295	8.6%
Male householder, no spouse	612	17.8%
Female householder, no spouse	730	21.2%
Households with children under 18	995	28.9%
Households with seniors (65+)	1,278	37.1%
Average household size	2.58

Marital status

Status	Male	Female
Never married	25.5%	20.6%
Married	56.6%	54.6%
Separated	2.7%	2.2%
Widowed	4.6%	12.6%
Divorced	10.6%	9.9%

Education

Less than 9th grade 4.3%

Some HS, no diploma 12.1%

HS graduate 40.5%

Some college, no degree 19.3%

Associate's degree 7.7%

Bachelor's degree 11.3%

Graduate / professional 4.8%

Metric	%
HS diploma or higher	83.5%
Bachelor's or higher	16.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	187	8.6%
Kindergarten	190	8.7%
Elementary school	1,086	49.8%
High school	433	19.9%
College / grad school	283	13.0%

Employment

Industry of employment

Education & healthcare 25.3%

Construction 12.8%

Retail trade 12.1%

Manufacturing 7.7%

Public administration 7.4%

Professional & management 7.1%

Agriculture & mining 6.4%

Other services 6.0%

Arts, food & hospitality 5.6%

Transportation & utilities 3.9%

Wholesale trade 2.9%

Finance & real estate 2.5%

Information 0.4%

Occupation

Category	%
Management, business & arts	27.2%
Service	20.6%
Sales & office	14.5%
Natural resources & construction	21.0%
Production & transportation	16.7%

Employment type

Type	%
Private sector	79.3%
Government	15.3%
Self-employed	5.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.5%
Carpool	13.0%
Public transit	0.0%
Walk	0.8%
Work from home	4.2%
Other means	0.4%
Avg commute (minutes)	34.9

Poverty

All people 14.1%

Under 18 years 13.6%

18 and over 14.2%

Married-couple families 4.1%

Female-led households 55.3%

Income support

Source	% of households
Social Security	41.0%
Retirement income	26.9%
Supplemental Security	10.0%
Cash public assistance	2.8%
Food stamps / SNAP	17.1%

Health indicators

Condition	%
Obesity	40.8%
High blood pressure	36.4%
High cholesterol	36.2%
Diabetes	12.3%
Heart disease	8.6%
Stroke	4.1%
Asthma	10.6%
Arthritis	31.2%
Kidney disease	3.5%
Pulmonary disease	11.2%
Cancer	7.1%

Behavior / access	%
Smoking	26.2%
Binge drinking	16.2%
No physical activity	30.9%
Less than 7 hrs sleep	34.8%
Depression	25.9%
Fair or poor health	21.3%
Poor mental health	17.6%
Poor physical health	14.7%
No health insurance	19.0%
Visited doctor (checkup)	73.4%
Visited dentist	51.8%
Cholesterol screening	86.1%
Teeth loss	25.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	534	7.8%

Disability	%
Any disability	26.5%
Under 18	18.7%
18–64 years	23.5%
65 and over	44.6%

Health insurance coverage

Type	%
Private insurance	60.3%
Public insurance	44.6%
No insurance	11.8%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,611	95.3%
Spanish	4	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	4	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,999	99.6%
Born in same state	8,995	99.5%
Born in different state	7,495	82.9%
Foreign born	4	0.0%
Naturalized citizen	40	0.4%
Not a US citizen	9	22.5%

Ancestry

Ancestry	Count	%
Italian	1,234	13.7%
Arab	703	7.8%
French	673	7.4%

Ancestry	Count	%
English	94	1%
German	39	0.4%
Irish	21	0.2%

Technology access

Metric	% of households
Computer access	38.1%
Internet access	86.4%

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

Frequently asked questions about ZIP code 63664

What city is ZIP code 63664 in?

ZIP code 63664 is primarily assigned to Potosi, Missouri.

What county is ZIP code 63664 in?

ZIP code 63664 falls within Washington County, Missouri.

Does ZIP code 63664 have a large retiree population?

41% of households in ZIP code 63664 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 63664?

The median home value in ZIP code 63664 is $114,400.

What is the population of ZIP code 63664?

ZIP code 63664 has an estimated population of 9,039 residents, with a density of 31 people per square mile.

What is the median household income in ZIP code 63664?

The median household income in ZIP code 63664 is $53,967, below the national median of ~$75,000.

What timezone is ZIP code 63664 in?

ZIP code 63664 observes the CST timezone.