Demographics of Union County, Arkansas

Union County, Arkansas had 36,926 people on July 1, 2025, by the Census Bureau’s estimate: −2,016 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Union County, in four figures

36,926
Population: July 1, 2025, Vintage 2025 estimate.; −5.2%
Change since July 2020: −2,016 people.; 41.4 ±0.6
Median age: ACS 2020–⁠2024.; $55,259 ±$4,567
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Union County, Arkansas's population shrank 5.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Union County, Arkansas's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Union County, Arkansas's population shrank 5.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Union County, Arkansas's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	38,942	100.0	100.0
2021	38,312	98.4	100.2
2022	37,856	97.2	100.7
2023	37,413	96.1	101.6
2024	37,121	95.3	102.5
2025	36,926	94.8	103.1

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Population of Union County, Arkansas on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	38,942	−117	−49	0	−71
2021	38,312	−630	−193	+6	−434
2022	37,856	−456	−99	+63	−428
2023	37,413	−443	−126	+36	−354
2024	37,121	−292	−71	+79	−300
2025	36,926	−195	−61	+33	−167

Age, 2020–2024

The median age is 41.4 ±0.6: for men 39.9 ±0.8 and for women 42.8 ±1.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Union County by age, ACS 2020–2024
Age	People	Share	Arkansas	United States
Under 5	2,186 ±123	5.8% ±0.3	5.9% ±<0.1	5.6% ±<0.1
5 to 17	6,798 ±533	17.9% ±1.4	17.2% ±0.1	16.3% ±<0.1
18 to 24	3,005 ±395	7.9% ±1.0	9.4% ±0.1	9.1% ±<0.1
25 to 44	9,015 ±447	23.8% ±1.2	25.7% ±0.1	26.9% ±<0.1
45 to 64	9,608 ±460	25.4% ±1.2	24.3% ±0.1	24.8% ±<0.1
65 and over	7,288 ±481	19.2% ±1.3	17.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $55,259 ±$4,567, and income per person $30,883 ±$1,883, in 2024 dollars. The median is $60,773 ±$467 in Arkansas and $80,734 ±$166 in the United States.

Households by income

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Households in Union County by income, ACS 2020–2024
Household income	Households	Share	Arkansas	United States
Under $25,000	3,796 ±433	25.3% ±2.8	19.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	3,188 ±450	21.3% ±3.0	22.0% ±0.3	16.7% ±<0.1
$50,000 to $74,999	2,575 ±402	17.2% ±2.6	17.4% ±0.3	15.5% ±<0.1
$75,000 to $99,999	1,648 ±353	11.0% ±2.3	12.8% ±0.2	12.6% ±<0.1
$100,000 to $149,999	2,288 ±319	15.3% ±2.1	15.0% ±0.3	17.5% ±<0.1
$150,000 to $199,999	682 ±157	4.5% ±1.0	6.2% ±0.2	9.6% ±<0.1
$200,000 or more	825 ±196	5.5% ±1.3	6.7% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Union County by age, ACS 2020–2024
Age	Below poverty	Rate	Arkansas	United States
All ages	7,286 ±925	19.5% ±2.5	16.0% ±0.2	12.5% ±0.1
Under 18	2,163 ±454	24.5% ±4.7	21.1% ±0.5	16.1% ±0.1
18 to 59	3,429 ±527	18.4% ±2.7	15.3% ±0.3	11.6% ±0.1
60 and over	1,694 ±306	17.3% ±3.0	12.6% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Union County, ACS 2020–2024
Measure	Union County	Arkansas	United States
Housing units	18,649 ±38	1,394,673 ±514	143,775,355 ±10,234
Occupied	80.4% ±2.1	86.5% ±0.3	89.9% ±0.1
Vacant	19.6% ±2.0	13.5% ±0.3	10.1% ±0.1
Owner occupied	72.7% ±2.5	66.4% ±0.4	65.2% ±0.3
Renter occupied	27.3% ±2.8	33.6% ±0.3	34.8% ±0.1
Median home value	$120,900 ±$7,707	$188,000 ±$1,754	$332,700 ±$236
Median gross rent	$847 ±$37	$947 ±$6	$1,413 ±$2
Median year built	1979 ±2	1987 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Union County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Arkansas	United States
Hispanic or Latino	1,793 ±0	4.7% ±<0.1	9.0% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	22,506 ±165	59.4% ±0.4	67.4% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	12,162 ±318	32.1% ±0.8	14.6% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	325 ±44	0.9% ±0.1	1.6% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	24 to 118	0.1% to 0.3%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 28	0% to 0.1%	0.4% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 57	0% to 0.2%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,018 ±383	2.7% ±1.0	6.3% ±0.2	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Union County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Arkansas	United States
Born in the state	27,182 ±795	71.7% ±2.1	60.4% ±0.2	57.3% ±<0.1
Born in another state	9,418 ±798	24.8% ±2.1	33.5% ±0.2	26.9% ±<0.1
Born a citizen outside the states	70 to 256	0.2% to 0.7%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	1,137 ±266	3.0% ±0.7	5.4% ±0.1	14.1% ±<0.1
Naturalized citizens	504 ±198	1.3% ±0.5	1.9% ±0.1	7.4% ±<0.1
Not citizens	633 ±284	1.7% ±0.7	3.6% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Union County among the counties of Arkansas

21st of 75 by population, July 2025. Every one is listed on the Arkansas page.

Counties of Arkansas near Union County in population, July 2025
County	July 2025	Change since 2020
Baxter County	42,982	+3.1%
Miller County	42,357	−0.5%
Independence County	38,785	+2.2%
Boone County	38,628	+3.3%
Mississippi County	37,828	−6.7%
Union County	36,926	−5.2%
Hot Spring County	33,451	+1.1%
Carroll County	29,263	+3.6%
Johnson County	26,225	+2.0%
Cleburne County	25,672	+3.9%
Poinsett County	22,483	−2.0%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026