Potosi, Missouri

Potosi: county seat of Washington County, Missouri, United States

About

Potosi is a city located in the county of Washington in the U.S. state of Missouri. Its population at the 2010 census was 2,660 and a population density of 441 people per km². After 10 years in 2020 city had an estimated population of 2,548 inhabitants.

The city was created 200 years ago in 1825.

Potosi locator map
Location of Potosi on Missouri map.

Quick Facts about Potosi

Population 2,548 (2020)
Country United States of America
State Missouri (United States)
County Washington County
Postal code 63664
Phone Area Codes 573
Area 6.03 km2
Latitude & Longitude 37.9364,-90.7879
Altitude 879 feet / 268 meters
Capital city Potosi is capital of Washington County
Establishment January 01, 1826 (200 years ago)
Time Zone America/Chicago
Local time 15:10:34 (15th April 2026)
Density 423 Pop. per km² as of 2020
Population growth -4.4% (2010-2020)
Weather 81℉ Chance Rain Showers then Slight Chance Showers And Thunderstorms 7-days weather
Potossi-courthouse enh image
Potossi-courthouse enh image

Geography

Potosi is located at 37°56'11"N 90°47'16"W (37.9364400, -90.7879100).

Potosi map

Click "full screen" full screen map icon to open full mode. View satellite images

Weather

81°F
Chance Rain Showers then Slight Chance Showers And Thunderstorms
9 mph SW Today

A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms...

7-Day Forecast

Demographics

According to census records, the population of Potosi decreased by 4.4% in 10 years.

Year Population % Change Method
2010 2,660 - census
2011 2,648 -0.45% estimation process
2012 2,648 0% estimation process
2013 2,650 0.08% estimation process
2014 2,641 -0.34% estimation process
2015 2,604 -1.42% estimation process
2016 2,607 0.12% estimation process
2017 2,616 0.34% estimation process
2018 2,604 -0.46% estimation process
2019 2,577 -1.05% estimation process
2020 2,548 -1.14% estimation process
Potosi zip code is 63664. County name: Washington, County fips: 29221
Mine-a-Breton, Потоси

Services and Civic Places in Potosi

1Mineral Point Town Hall

702 State St, Potosi, MO 63664 View details

Phone: +15734383487

2Potosi City Hall

121 E High St, Potosi, MO 63664 View details

Phone: +15734382767 | Website available

People born in Potosi (7)

People born in Potosi, including baseball player Don Choate, baseball player Donne Wall, Business person in mining Firmin V. Desloge, .

More notable people

  • Jim LaMarque (Negro League Baseball player) he was born in 29/07/1921
  • John A. Lankford (American architect) he was born in 04/12/1874
  • Paul Fitzwater (American politician) he was born in 05/03/1959
  • Pete Casey (American football player) he was born in 02/12/1895

Nearby Schools and Colleges

Schools and campuses linked to Potosi, MO. Select a name to open its map and contact details.

Code Name City ZIP
178217 Mineral Area College Park Hills (MO) 63601-1000

Nearby Transit Stations (4)

Rail and bus stations connected to Potosi, MO. Select a station to open its map and address details.

Code Name Address Type
WAH Washington 301 West Front St. RAIL
KWD Kirkwood 110 West Argonne Dr. RAIL
STL Gateway Transportation Center 551 South 16th St. RAIL
HEM Hermann Wharf & Gutenberg Sts. RAIL

Closest post offices linked to Potosi.

Post Office Name City ZIP
Post Office Potosi (MO) 63664

Other places with the same name (1)

  • Potosi, Wisconsin civil town in Grant County, Wisconsin with a population of 887 people.

Other cities in Washington County

Cities, towns, neighborhoods & other populated places in Washington County , MO.

City Name Population Title
Irondale 438 City in Washington County, Missouri
Mineral Point 353 Village in the United States
Summit 302 Human settlement in Missouri, United States of America
Caledonia 126 City in Washington County, Missouri, United States of America

Distance to Other Cities

Potosi distances to largest Missouri cities