What is the population of Stanley County?

The population of Stanley County, SD is 3,121.

Where is Stanley County located?

Stanley County, SD is located at latitude 44.4123200 and longitude -100.7359400. It is in United States.

What is the area of Stanley County?

The area of Stanley County, SD is 3929 km².

What is the elevation of Stanley County?

Stanley County, SD has an elevation of 585 meters (1919 feet) above sea level.

What time zone is Stanley County in?

Stanley County, SD is in the America/Denver time zone.

How has the population of Stanley County changed?

The population of Stanley County, SD has increased from 2,966 (2010) to 3,121 (2020), a change of 5.2%.

Stanley County, South Dakota

Stanley County: county in South Dakota, United States

About

Stanley County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 2,966 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 3,121 inhabitants. Its county seat is Fort Pierre. The county was created 153 years ago in 1872.

Stanley County locator map — Location of Stanley County on South Dakota map.

County Snapshot

Stanley County at a glance

Stanley County currently has 1 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

South Dakota counties

Open related pages

Largest city

Fort Pierre

Population 2,236

Quick Facts about Stanley County

Population	3,121 (2020)
Country	United States of America
State	South Dakota (United States)
Different from	Stanly County
Area	3929 km²
Water as percent of area	4.8%
Land as percent of area	95.2%
Latitude & Longitude	44.4123,-100.7359
Named for	David S. Stanley
Altitude	2,018 feet / 615 meters
Capital	Fort Pierre
Establishment	January 01, 1873
Time Zone	UTC−07:00, America/Denver, UTC−06:00
Local time	20:00:50 (17th April 2026)
Density	1 Pop. per km² as of 2020
Population growth	4.97% (2010-2020)
Weather	46℉ Mostly Cloudy 7-days weather

FortPierreChouteau1854 image

Geography

Stanley County is located at 44°24'44"N 100°44'9"W (44.4123200, -100.7359400).

Stanley County map

Click "full screen"

icon to open full mode. View satellite images

The largest city of Stanley County is Fort Pierre with a population of 2,236. . See all Stanley County cities & populated places.

Stanley County Populated Places

Cities, towns, neighborhoods & other populated places in Stanley County.

City Name	Population	Title
Fort Pierre	2,236	City in South Dakota, United States of America

Weather

46°F

Mostly Cloudy

32 mph NW This Afternoon

Mostly cloudy. High near 46, with temperatures falling to around 40 in the afternoon. Northwest wind around 32 mph, with gusts as high as 43 mph.

7-Day Forecast

Official website of Stanley County

Official Website

Stanley County has 1 neighbours.

Dewey County county in South Dakota, United States of America

Fort Pierre

Demographics

The population of Stanley County increased by 4.97% in 10 years.

Year	Population	% Change	Method
2010	2,966	-	census
2011	2,978	0.4%	estimation process
2012	2,976	-0.07%	estimation process
2013	2,979	0.1%	estimation process
2014	2,979	0%	estimation process
2015	2,974	-0.17%	estimation process
2016	3,012	1.26%	estimation process
2017	2,986	-0.87%	estimation process
2018	3,017	1.03%	estimation process
2019	3,098	2.61%	estimation process
2020	3,121	0.74%	estimation process

Comitatul Stanley, Comte de Stanley, Comté de Stanley, Condado de Stanley, Condado han Stanley, Contea di Stanley, Hrabstwo Stanley, Okrug Stenli, Quan Stanley, Quận Stanley, Stanley, Stanley Kun, Stanley Kūn, Stanley konderria, Stanley maakond, Stanley megye, Stehnli, Stenli, Stenli srjan, mqatʿt stanly, shhrstan astnly dakwtay jnwby, si tan li xian, stenali ka'unti, sutanri jun, Округ Стенли, Стенли, Стенлі, Стэнли, Ստենլի շրջան, اسٹینلی کاؤنٹی، جنوبی ڈکوٹا, سٹینلے کاؤنٹی, شهرستان استنلی، داکوتای جنوبی, مقاطعة ستانلي, স্টেনলি কাউন্টি, スタンリー郡, 斯坦利縣

South Dakota Other Counties (more counties)

County Name	Population	Title
Minnehaha County	196,659	County in South Dakota, United States of America
Sioux Falls	157,584	The largest city in South Dakota.
Pennington County	115,926	County in South Dakota, United States of America
Rapid City	77,503	The second most populous city in South Dakota.
Lincoln County	63,019	County in South Dakota, United States
Brown County	38,738	County in South Dakota, United States
Brookings County	35,603	County in South Dakota, United States of America
Meade County	28,588	County in South Dakota, United States
Codington County	28,186	County in South Dakota, United States of America
Lawrence County	26,221	County in South Dakota, United States
Yankton County	22,742	County in South Dakota, United States
Watertown	22,303	City in and county seat of Codington County, South Dakota, United States
Davison County	19,812	County in South Dakota, United States of America
Beadle County	18,513	County in South Dakota, United States
Hughes County	17,336	County in Oklahoma, United States
Union County	16,192	County in South Dakota, United States