What is the population of Harper County?

The population of Harper County, OK is 3,611.

Where is Harper County located?

Harper County, OK is located at latitude 36.7887300 and longitude -99.6673600. It is in United States.

What is the area of Harper County?

The area of Harper County, OK is 2696 km².

What is the elevation of Harper County?

Harper County, OK has an elevation of 610 meters (2001 feet) above sea level.

What time zone is Harper County in?

Harper County, OK is in the America/Chicago time zone.

How has the population of Harper County changed?

The population of Harper County, OK has decreased from 3,685 (2010) to 3,611 (2020), a change of -2%.

Harper County, Oklahoma

Harper County: county in Oklahoma, United States

About

Harper County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 3,685 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 3,611 inhabitants. Its county seat is Buffalo. The county was created 118 years ago in 1907.

Harper County locator map — Location of Harper County on Oklahoma map.

County Snapshot

Harper County at a glance

Harper County currently has 4 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.

Oklahoma counties

Open related pages

Largest city

Laverne

Population 1,297

Quick Facts about Harper County

Population	3,611 (2020)
Country	United States of America
State	Oklahoma (United States)
Different from	Harper County
Area	2696 km²
Water as percent of area	0.2%
Land as percent of area	99.8%
Latitude & Longitude	36.7887,-99.6674
Named for	Oscar G. Harper
Capital	Buffalo
Establishment	July 16, 1907
Time Zone	America/Chicago
Local time	05:25:01 (17th April 2026)
Density	1 Pop. per km² as of 2020
Population growth	-2.05% (2010-2020)

HARPER COUNTY COURTHOUSE image

Geography

Harper County is located at 36°47'19"N 99°40'2"W (36.7887300, -99.6673600). It has 6 neighbors: Clark County, Comanche County, Ellis County, Woods County, Woodward County and Beaver County.

Harper County map

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The largest city of Harper County is Laverne with a population of 1,297. Other cities include, Buffalo population 1,265, May population 39 and Rosston population 31. See all Harper County cities & populated places.

Harper County Populated Places

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

City Name	Population	Title
Laverne	1,297	Town in Harper County, Oklahoma, United States
Buffalo	1,265	Town in Oklahoma
May	39	Human settlement in Harper County, Oklahoma, United States of America
Rosston	31	Town of the United States

Harper County has 6 neighbours.

Clark County county in Kansas, United States
Comanche County county in Kansas, United States
Ellis County county in Oklahoma, United States
Woods County county in Oklahoma, United States
Woodward County county in Oklahoma, United States
Beaver County county in Oklahoma, United States

Buffalo

Demographics

According to census records, the population of Harper County decreased by 2.05% in 10 years.

Year	Population	% Change	Method
2010	3,685	-	census
2011	3,713	0.75%	estimation process
2012	3,711	-0.05%	estimation process
2013	3,871	4.13%	estimation process
2014	3,894	0.59%	estimation process
2015	3,826	-1.78%	estimation process
2016	3,776	-1.32%	estimation process
2017	3,784	0.21%	estimation process
2018	3,727	-1.53%	estimation process
2019	3,688	-1.06%	estimation process
2020	3,611	-2.13%	estimation process

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Other places with the same name (1)

Harper County, Kansas county in Oklahoma, United States with a population of 5,336 people.

Oklahoma Other Counties (more counties)

County Name	Population	Title
Oklahoma County	804,041	County in Oklahoma, United States
Tulsa County	657,589	County in Oklahoma, United States of America
Oklahoma City	655,057	The twenty-seventh most populous city in the United States and the center of the Oklahoma City metropolitan area.
Tulsa	403,166	The second most populous city in Oklahoma and the center of the Tulsa metropolitan area.
Cleveland County	287,066	County in North Carolina, United States
Canadian County	153,192	County in Oklahoma, United States
Norman	125,762	The second most populous city in Oklahoma.
Comanche County	121,099	County in Oklahoma, United States
Broken Arrow	111,648	The most populous city in Tulsa County, Oklahoma.
Edmond	95,346	The fourth most populous city in Oklahoma County, Oklahoma.
Lawton	93,164	The most populous city in Comanche County, Oklahoma.
Rogers County	93,155	County in Oklahoma, United States
Wagoner County	82,925	County in Oklahoma, United States of America
Payne County	81,755	County in Oklahoma, United States
Pottawatomie County	72,998	County in Oklahoma, United States
Creek County	71,485	County in Oklahoma, United States