Illinois · Census place 1702609

Assumption, Illinois

Assumption is a city in Christian County, Illinois with an estimated 1,123 residents on July 1, 2024. It is the 618th largest of 651 incorporated places of 1,000+ people in the state.

Population 2024
1,123
#618 of 651 in Illinois
Change since 2020
-2.8%
-32 people
Land area
1.0 sq mi
Density
1,134 / sq mi
State median 2,177
Orange pin: Assumption. Shaded: its county. Dark pin: Springfield.

Measure from here

Tools and pages that start from Assumption

Assumption population, 2020 to 2024

Assumption lost 32 residents from July 2020 to July 2024, a change of -2.8%. In the latest year it moved by -3.

1,15520201,14520211,13120221,12620231,1232024
July 1 estimates. The April 2020 estimates base was 1,158. The axis starts above zero so yearly changes are visible.

Assumption covers 0.99 square miles of land, for 1,134 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Assumption is less dense than the typical town.

What county Assumption is in

All of Assumption's residents live in Christian County, which had 33,247 residents in 2024. Assumption holds 3.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Assumption

1 ZIP Code Tabulation Area (ZCTA) overlaps Assumption by at least 10% of the ZCTA's or the city's land: 62510. 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 Assumption is

The Census internal point of Assumption is at 39.518000, -89.047700. Springfield, the capital, is 36.8 miles WNW in a straight line. The nearest larger place is Moweaqua, IL (1,724 people), 7.6 miles away. The nearest city of 100,000 or more is Springfield, IL, 36.9 miles away.

Internal point

Decimal
39.518000, -89.047700
DMS
39°31'4.80"N 89°02'51.72"W
UTM
16N 323979.0E 4376264.1N
Geohash
dp08vdj3n
Plus code
86FGGX92+6W

Daylight in Assumption

At 39.52° N, Assumption gets about 14 h 58 min of daylight around the June solstice and 9 h 23 min around the December solstice, a swing of 5 h 35 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Assumption

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Moweaqua, 7.6 miles away, with 1,724 people.

Questions people ask

What is the population of Assumption, IL?

1,123 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 32 (2.8%) from 1,155 in July 2020.

What county is Assumption in?

Christian County. All of its residents live in that county.

What ZIP codes cover Assumption?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 62510.

How far is Assumption from Springfield?

36.8 miles (59.3 km) in a straight line, heading WNW from Assumption.

What is the nearest larger city to Assumption?

Moweaqua, IL, with 1,724 residents, 7.6 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.