Potosi ZIP Code List — Washington County, MO

There is one unique ZIP code in Potosi, Missouri and it is 63664. Area code: 573.
1
ZIP codes
287.67
sq mi land
1.01
sq mi water
573
area code
Potosi, MO ZIP code map

About Potosi, MO

Potosi, Missouri, is a charming city located in the heart of Washington County. Known for its rich history and picturesque landscapes, Potosi offers a serene small-town atmosphere with close-knit community ties. The city is characterized by its friendly residents and vibrant local events that celebrate its heritage.

Location & geography

Geographically, Potosi is situated in southeastern Missouri, making it a convenient hub for outdoor enthusiasts. It is approximately 60 miles southwest of St. Louis, with nearby cities including Farmington at about 26 miles to the south and Bonne Terre around 22 miles to the southeast. The city spans a land area of 287.67 square miles, with a small water area of 1.01 square miles, predominantly consisting of rolling hills and forested areas.

Community & economy

The community of Potosi is known for its welcoming atmosphere and a strong sense of pride in local history. Major industries in the area include mining and agriculture, contributing to the city's economic stability and growth. Daily life in Potosi is characterized by a mix of traditional values and modern conveniences, with various shops, eateries, and recreational activities available for residents and visitors alike.

Transportation

Transportation in Potosi is facilitated by several key highways, including Missouri Route 8 and Route 21, which provide easy access to surrounding areas. The nearest commercial airport is the MidAmerica St. Louis Airport, located roughly 70 miles away. Public transit options are limited, but local services do connect residents to nearby towns.

History

Potosi was founded in the early 19th century, primarily as a mining town that played a significant role in the local economy. The area's mines were a key contributor to the growth of the city and attracted many settlers looking for work. Throughout its history, Potosi has hosted various community events and festivals that celebrate its mining heritage and local culture.

Did you know?

One surprising fact about Potosi is that it is home to the oldest continuing agricultural fair in Missouri, which dates back to 1858. Additionally, the city offers the historic Potosi Jail, a 19th-century structure that is a popular point of interest for history buffs.

ZIP codes for Potosi, MO (1)
ZIP code City County Map
63664 Potosi Washington View map

Demographics & statistics

9,039
Population
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

GroupCount%
Under 182,17724.1%
18 and over6,86275.9%
65 and over1,84820.4%
Median age40.1 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%
GroupCount%
White8,38191.3%
Two or more races5445.9%
Hispanic or Latino1421.5%
Other race610.7%
Native Hawaiian / Pacific Islander350.4%
Black or African American150.2%

Household income

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 $10k5.0%
$10k–$15k6.5%
$15k–$25k8.9%
$25k–$35k10.1%
$35k–$50k16.8%
$50k–$75k19.3%
$75k–$100k14.7%
$100k–$150k11.8%
$150k–$200k5.2%
$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

MetricValue
Median home value$114,400
Median rent / month$660
Owner occupied76.6%
Renter occupied23.4%
Vacant12.4%
Single-family detached67.5%
Large apartment buildings0.1%
Mobile homes19.8%
Median rooms5.3
Avg household size (owned)2.68

Year built

Era%
2020 or later0.4%
2010–20197.0%
2000–200913.8%
1990–199912.3%
1980–198913.1%
1970–197916.5%
1960–196912.8%
1950–195911.1%
1940–19494.4%
1939 or earlier8.6%

Bedrooms

Size% of units
No bedroom (studio)0.8%
1 bedroom5.9%
2 bedrooms35.2%
3 bedrooms44.9%
4 bedrooms9.2%
5+ bedrooms4.0%

Vehicles per household

Vehicles% of households
No vehicle8.0%
1 vehicle23.7%
2 vehicles35.6%
3 or more32.7%

Heating fuel

Fuel type%
Utility gas19.2%
Electricity57.3%
Propane / LP gas11.3%
Wood12.2%

Households & families

Household typeCount%
Married-couple family1,80452.4%
Cohabiting couple2958.6%
Male householder, no spouse61217.8%
Female householder, no spouse73021.2%
Households with children under 1899528.9%
Households with seniors (65+)1,27837.1%
Average household size2.58

Marital status

StatusMaleFemale
Never married25.5%20.6%
Married56.6%54.6%
Separated2.7%2.2%
Widowed4.6%12.6%
Divorced10.6%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 higher83.5%
Bachelor's or higher16.1%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool1878.6%
Kindergarten1908.7%
Elementary school1,08649.8%
High school43319.9%
College / grad school28313.0%

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 & arts27.2%
Service20.6%
Sales & office14.5%
Natural resources & construction21.0%
Production & transportation16.7%

Employment type

Type%
Private sector79.3%
Government15.3%
Self-employed5.3%
Unpaid family workers0.0%

Commute

Method%
Drive alone81.5%
Carpool13.0%
Public transit0.0%
Walk0.8%
Other means0.4%
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 Security41.0%
Retirement income26.9%
Supplemental Security10.0%
Cash public assistance2.8%
Food stamps / SNAP17.1%

Health indicators

Condition%
High blood pressure36.4%
High cholesterol36.2%
Heart disease8.6%
Stroke4.1%
Asthma10.6%
Arthritis31.2%
Kidney disease3.5%
Pulmonary disease11.2%
Cancer7.1%
Behavior / access%
Binge drinking16.2%
No physical activity30.9%
Less than 7 hrs sleep34.8%
Fair or poor health21.3%
Poor mental health17.6%
Poor physical health14.7%
No health insurance19.0%
Visited doctor (checkup)73.4%
Visited dentist51.8%
Cholesterol screening86.1%
Teeth loss25.5%

Veterans & disability

VeteransCount%
Civilian veterans5347.8%
Disability%
Any disability26.5%
Under 1818.7%
18–64 years23.5%
65 and over44.6%

Health insurance coverage

Type%
Private insurance60.3%
Public insurance44.6%
Uninsured under 192.5%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only8,61195.3%
Spanish40.0%
Other Indo-European00.0%
Asian & Pacific Islander40.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)8,99999.6%
Born in same state8,99599.5%
Born in different state7,49582.9%
Foreign born40.0%
Naturalized citizen400.4%
Not a US citizen922.5%

Ancestry

AncestryCount%
Italian1,23413.7%
Arab7037.8%
French6737.4%
AncestryCount%
English941%
German390.4%
Irish210.2%

Technology access

Metric% of households
Computer access38.1%
Internet access86.4%

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

Frequently asked questions
What is the ZIP code for Potosi, MO?
Potosi, MO has one ZIP code: 63664.
What is the main ZIP code for Potosi, MO?
The primary ZIP code for Potosi, MO is 63664. The city uses area code 573 for phone service.
What county is Potosi, MO in?
Potosi is located in Washington County, Missouri.
How many ZIP codes are in Potosi, MO?
Potosi, MO has 1 ZIP code.
What is the ZIP code for downtown Potosi and the historic Washington County Courthouse area?
The downtown Potosi area, including the Washington County Courthouse, is located in ZIP code 63664.
What ZIP code covers the Potosi area near the Old Lead Belt mining district?
The Potosi area, historically significant for its lead mining heritage in the Old Lead Belt, uses ZIP code 63664 for mail delivery.
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