Union, Kentucky

Union population, 2020 to 2024

Union added 423 residents from July 2020 to July 2024, a change of +5.7%. In the latest year it moved by +143. Among 79 Kentucky places of 5,000 or more, that growth ranks 7th; the median place changed by +2.0%. The median place of 5,000+ in Kentucky has 10,541 people, so Union is 75% of it.

Union covers 3.85 square miles of land, for 2,045 people per square mile of land. The median Kentucky place of 5,000+ has 1,588, so Union is denser than the typical town.

What county Union is in

All of Union's residents live in Boone County, which had 144,135 residents in 2024. Union holds 5.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Union

1 ZIP Code Tabulation Area (ZCTA) overlaps Union by at least 10% of the ZCTA's or the city's land: 41091. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Union is

The Census internal point of Union is at 38.947600, -84.675200. Frankfort, the capital, is 53.6 miles SSW in a straight line. The nearest larger place is Florence, KY (33,763 people), 3.5 miles away. The nearest city of 100,000 or more is Cincinnati, OH, 16.1 miles away.

Daylight in Union

At 38.95° N, Union gets about 14 h 54 min of daylight around the June solstice and 9 h 26 min around the December solstice, a swing of 5 h 28 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Union

The eight nearest incorporated places of 1,000+ in Kentucky, measured between internal points. The closest is Florence, 3.5 miles away, with 33,763 people.