Anna, Illinois

Anna population, 2020 to 2024

Anna lost 117 residents from July 2020 to July 2024, a change of -2.7%. In the latest year it moved by +6.

Anna covers 3.69 square miles of land and 0.02 of water, for 1,129 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Anna is less dense than the typical town.

What county Anna is in

All of Anna's residents live in Union County, which had 16,886 residents in 2024. Anna holds 24.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Anna

1 ZIP Code Tabulation Area (ZCTA) overlaps Anna by at least 10% of the ZCTA's or the city's land: 62906. 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 Anna is

The Census internal point of Anna is at 37.461100, -89.237500. Springfield, the capital, is 161.8 miles N in a straight line. The nearest larger place is Carbondale, IL (22,223 people), 18.0 miles away. The nearest city of 100,000 or more is St. Louis, MO, 97.9 miles away.

Daylight in Anna

At 37.46° N, Anna gets about 14 h 45 min of daylight around the June solstice and 9 h 35 min around the December solstice, a swing of 5 h 10 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Anna

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Jonesboro, 1.7 miles away, with 1,655 people.