Junction City, IL Profile: Facts & Data

Junction City, Illinois - Basic Facts

The Village of Junction City had a population of 526 as of July 1, 2025.

The primary coordinate point for Junction City is located at latitude 38.5803 and longitude -89.1278 in Marion County. The formal boundaries for the Village of Junction City encompass a land area of 0.68 sq. miles and a water area of 0.02 sq. miles. Marion County is in the Central time zone (GMT -6).

The Village of Junction City has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Junction City is located within Township of Sandoval, a minor civil division (MCD) of Marion County.

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Junction City, IL Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	526 (100%)
Population in Households	526 (100.0%)
Population in Families	439 (83.5%)
Population in Group Quarters¹	0
Population Density	769
Diversity Index²	16


INCOME
Median Household Income	$54,030
Average Household Income	$68,670
% of Income for Mortgage⁴	16%
Per Capita Income	$26,110
Wealth Index⁵	45
Socioeconomic Status Index⁶	Low (36.9)

HOUSING
Total HU (Housing Units)	204 (100%)
Owner Occupied HU	167 (81.9%)
Renter Occupied HU	33 (16.2%)
Vacant Housing Units	4 ( 2.0%)
Median Home Value	$137,500
Average Home Value	$236,198
Housing Affordability Index³	122

HOUSEHOLDS
Total Households	200
Average Household Size	2.63
Family Households	144
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

204 (100%)

Owner Occupied HU

167 (81.9%)

Renter Occupied HU

33 (16.2%)

Vacant Housing Units

4 ( 2.0%)

Median Home Value

$137,500

Average Home Value

$236,198

Housing Affordability Index³

122

HOUSEHOLDS

Total Households

200

Average Household Size

2.63

Family Households

144

Average Family Size

3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	-0.04%	-0.15%
Households	0.10%	0.10%
Families		-1.58%
Median Household Income		3.43%
Per Capita Income		1.81%
Owner Occupied HU		0.59%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-0.04%

-0.15%

Households

0.10%

Families

-1.58%

Median Household Income

3.43%

Per Capita Income

1.81%

Owner Occupied HU

0.59%

Junction City, IL - Peer Comparisons by Rank and Percentile

The table below compares Junction City to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 887	39th
Population Density	# 858	41st
Median Household Income	# 1296	11th
Housing Affordability Index	# 671	46th
Per Capita Income	# 1396	5th
Diversity Index	# 1025	30th

Variable Description

Rank

Percentile

Total Population

# 887

39th

Population Density

# 858

41st

Median Household Income

# 1296

11th

Housing Affordability Index

# 671

46th

Per Capita Income

# 1396

5th

Diversity Index

# 1025

30th

Illinois Census Data Comparison Tool

Junction City, IL Profile: Facts & Data

Junction City, Illinois - Basic Facts

Junction City, IL Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Junction City, IL - Peer Comparisons by Rank and Percentile

Junction City, IL - Most Popular Things to Do

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