Grant County is a county in the U.S. state of Arkansas. Its population was 17,958 at the 2020 United States Census. The county seat is Sheridan.

Grant County is included in the Little Rock–North Little Rock–Conway, AR Metropolitan Statistical Area.

Formed on February 4, 1869, Grant County was named in honor of U.S. President-elect Ulysses S. Grant. It is an alcohol prohibition or dry county.

Robert W. Glover, a Missionary Baptist pastor who served in both houses of the Arkansas General Assembly (1905-1912) from Sheridan, introduced in 1909 the resolution calling for the establishment of four state agricultural colleges. His brother, David Delano Glover, a Methodist, was a state representative in the 1907 session and a member of the United States House of Representatives from 1929 to 1935, having been unseated in 1934 by Grant County native John Little McClellan who at the time was practicing law in Camden. McClellan later went on to become Arkansas's longest serving U.S. senator.

According to the U.S. Census Bureau, the county has a total area of 633 square miles (1,640 km), of which 632 square miles (1,640 km) is land and 1.1 square miles (2.8 km) (0.2%) is water. Grant County is considered part of the Arkansas Timberlands geographical area.

• U.S. Highway 167
• U.S. Highway 270
• Highway 35
• Highway 46

• Saline County (north)
• Pulaski County (northeast)
• Jefferson County (east)
• Cleveland County (southeast)
• Dallas County (south)
• Hot Spring County (west)

Historical population

Census	Pop.	Note	%±
1870	3,943		—
1880	6,185		56.9%
1890	7,786		25.9%
1900	7,671		−1.5%
1910	9,425		22.9%
1920	10,710		13.6%
1930	9,834		−8.2%
1940	10,477		6.5%
1950	9,024		−13.9%
1960	8,294		−8.1%
1970	9,711		17.1%
1980	13,008		34.0%
1990	13,948		7.2%
2000	16,464		18.0%
2010	17,853		8.4%
2020	17,958		0.6%
2023 (est.)	18,383		2.4%
U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010

Grant County racial composition

Race	Number	Percentage
White (non-Hispanic)	16,166	90.02%
Black or African American (non-Hispanic)	447	2.49%
Native American	70	0.39%
Asian	76	0.42%
Pacific Islander	1	0.01%
Other/Mixed	758	4.22%
Hispanic or Latino	440	2.45%

As of the 2020 United States census, there were 17,958 people, 6,863 households, and 5,007 families residing in the county.

As of the 2000 census, there were 16,464 people, 4,241 households, and 4,780 families residing in the county. The population density was 26 inhabitants per square mile (10/km). There were 6,960 housing units at an average density of 11 per square mile (4.2/km). The racial makeup of the county was 95.55% White, 2.47% Black or African American, 0.45% Native American, 0.13% Asian, 0.03% Pacific Islander, 0.64% from other races, and 0.73% from two or more races. 1.15% of the population were Hispanic or Latino of any race.

There were 6,241 households, out of which 35.60% had children under the age of 18 living with them, 64.70% were married couples living together, 8.50% had a female householder with no husband present, and 23.40% were non-families. 20.40% of all households were made up of individuals, and 9.00% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.00.

In the county, the population was spread out, with 25.90% under the age of 18, 8.00% from 18 to 24, 29.60% from 25 to 44, 24.30% from 45 to 64, and 12.20% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 98.50 males. For every 100 females age 18 and over, there were 96.30 males.

The median income for a household in the county was $37,182, and the median income for a family was $42,901. Males had a median income of $31,842 versus $22,098 for females. The per capita income for the county was $17,547. About 7.80% of families and 10.20% of the population were below the poverty line, including 12.50% of those under age 18 and 13.00% of those age 65 or over.

The largest self-identified ancestry groups in Grant County, Arkansas are:

• 30.1% English
• 12.0% American
• 9.5% Irish
• 8.9% German
• 1.4% Italian
• 1.2% Polish
• 1.1% French
• 0.7% Swedish

Over The past few election cycles Grant county has trended heavily towards the GOP. The last Democrat (as of 2024) to carry this county was Bill Clinton in 1996.

United States presidential election results for Grant County, Arkansas

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2024	6,755	83.62%	1,192	14.76%	131	1.62%
2020	6,794	82.85%	1,268	15.46%	138	1.68%
2016	5,725	76.90%	1,373	18.44%	347	4.66%
2012	4,829	74.53%	1,468	22.66%	182	2.81%
2008	5,023	73.94%	1,562	22.99%	208	3.06%
2004	4,205	62.11%	2,524	37.28%	41	0.61%
2000	3,285	54.63%	2,535	42.16%	193	3.21%
1996	1,925	34.77%	2,948	53.25%	663	11.98%
1992	2,272	36.66%	3,190	51.47%	736	11.87%
1988	2,717	55.40%	2,142	43.68%	45	0.92%
1984	3,167	59.16%	2,148	40.13%	38	0.71%
1980	2,007	38.04%	3,078	58.34%	191	3.62%
1976	1,047	21.61%	3,797	78.39%	0	0.00%
1972	2,414	67.41%	1,147	32.03%	20	0.56%
1968	627	17.07%	852	23.20%	2,194	59.73%
1964	1,308	42.93%	1,678	55.07%	61	2.00%
1960	563	24.81%	1,394	61.44%	312	13.75%
1956	818	38.24%	1,272	59.47%	49	2.29%
1952	637	29.84%	1,487	69.65%	11	0.52%
1948	121	9.80%	883	71.50%	231	18.70%
1944	334	23.49%	1,088	76.51%	0	0.00%
1940	160	13.30%	1,043	86.70%	0	0.00%
1936	147	13.06%	978	86.86%	1	0.09%
1932	55	3.26%	1,626	96.50%	4	0.24%
1928	439	29.54%	1,045	70.32%	2	0.13%
1924	133	15.50%	628	73.19%	97	11.31%
1920	230	26.59%	619	71.56%	16	1.85%
1916	190	16.56%	957	83.44%	0	0.00%
1912	110	17.68%	440	70.74%	72	11.58%
1908	160	21.28%	524	69.68%	68	9.04%
1904	151	26.96%	406	72.50%	3	0.54%
1900	175	23.36%	574	76.64%	0	0.00%
1896	125	13.43%	801	86.04%	5	0.54%

• Leola
• Prattsville
• Sheridan (county seat)

• Poyen
• Tull

Townships in Arkansas are the divisions of a county. Each township includes unincorporated areas; some may have incorporated cities or towns within part of their boundaries. Arkansas townships have limited purposes in modern times. However, the United States census does list Arkansas population based on townships (sometimes referred to as "county subdivisions" or "minor civil divisions"). Townships are also of value for historical purposes in terms of genealogical research. Each town or city is within one or more townships in an Arkansas county based on census maps and publications. The townships of Grant County are listed below; listed in parentheses are the cities, towns, and/or census-designated places that are fully or partially inside the township.

Grant County is home to Jenkins' Ferry Battleground State Park.

• List of dry counties in Arkansas
• List of counties in Arkansas
• List of lakes in Grant County, Arkansas
• National Register of Historic Places listings in Grant County, Arkansas

34°17′40″N 92°25′54″W / 34.29444°N 92.43167°W / 34.29444; -92.43167