Union County Population

1860–2026

604.98K

2026 projection

5.5% since 2020 (increase)

0100K200K300K400K500K600K700K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Union County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026604,983+3,1200.52%
2025601,863+3,1200.52%
2024598,743+12,6282.15%
2023586,115+11,1811.94%
2022574,934+2,4120.42%
2021572,522-9600.17%
2020573,482+16,8183.02%
2019556,664+1890.03%
2018556,475+1,7800.32%
2017554,695+1,8810.34%

Showing 10 of 31 years.

Union County Demographics

39.1median age

Median age

Female40.1 yrs
Male37.9 yrs

Adults

443,030
87,277 seniors (65+) · 20% of adults355,753 other adults

Sex

Female 50.6% · 293,097Male 49.4% · 286,193

Population by age

MaleFemale85+ years, male: 3,62485+ years, female: 6,84180–84 years, male: 4,47380–84 years, female: 5,73575–79 years, male: 6,36675–79 years, female: 9,21770–74 years, male: 10,72270–74 years, female: 12,22565–69 years, male: 12,92265–69 years, female: 15,15260–64 years, male: 16,00660–64 years, female: 17,57255–59 years, male: 21,03855–59 years, female: 20,49750–54 years, male: 19,76450–54 years, female: 19,89045–49 years, male: 19,51345–49 years, female: 19,33740–44 years, male: 20,39340–44 years, female: 20,30935–39 years, male: 20,69835–39 years, female: 20,42230–34 years, male: 19,08830–34 years, female: 18,85325–29 years, male: 17,23425–29 years, female: 17,10120–24 years, male: 17,46520–24 years, female: 16,85715–19 years, male: 19,28515–19 years, female: 18,31510–14 years, male: 20,46910–14 years, female: 19,8135–9 years, male: 18,7575–9 years, female: 17,7610–4 years, male: 18,3760–4 years, female: 17,20085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–410K10K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 5,793 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Union County Income

$103,202median household income

Median household income

$103,202

Half of households earn more, half earn less

Median earnings

$59,112

Typical yearly pay for a worker 25 or older.

Poverty rate

9.2%

About 1 in 11 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Union County Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%50%45%
Never married37%39%36%
Divorced8%7%10%
Widowed5%2%7%
Separated2%2%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year