Illinois Gazetteer
Also See Johnston City, IL: ZIP Codes & Maps
The City of Johnston City had a population of 3,263 as of July 1, 2024.
The primary coordinate point for Johnston City is located at latitude 37.8206 and longitude -88.9276 in Williamson County. The formal boundaries for the City of Johnston City encompass a land area of 2.09 sq. miles and a water area of 0.06 sq. miles. Williamson County is in the Central time zone (GMT -6).
The City of Johnston 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 City of Johnston City is located within Lake Creek Election Precinct, a minor civil division (MCD) of Williamson County.
POPULATION | |
|---|---|
| Total Population | 3,263 (100%) |
| Population in Households | 3,258 (99.8%) |
| Population in Families | 2,554 (78.3%) |
| Population in Group Quarters1 | 5 ( 0.2%) |
| Population Density | 1,542 |
| Diversity Index2 | 22 |
INCOME | |
| Median Household Income | $60,256 |
| Average Household Income | $74,097 |
| % of Income for Mortgage4 | 9% |
| Per Capita Income | $33,293 |
| Wealth Index5 | 54 |
| Socioeconomic Status Index6 | Moderate (50.8) |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 1,705 (100%) |
| Owner Occupied HU | 1,092 (64.0%) |
| Renter Occupied HU | 374 (21.9%) |
| Vacant Housing Units | 239 (14.0%) |
| Median Home Value | $82,440 |
| Average Home Value | $136,126 |
| Housing Affordability Index3 | 262 |
HOUSEHOLDS | |
| Total Households | 1,466 |
| Average Household Size | 2.22 |
| Family Households | 879 |
| Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2024 | 2024-2029 |
|---|---|---|
| Population | -0.85% | -0.56% |
| Households | -0.14% | 0.10% |
| Families | 0.09% | |
| Median Household Income | 4.71% | |
| Per Capita Income | 3.34% | |
| Owner Occupied HU | 0.53% |
The table below compares Johnston City to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 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 | # 413 | 72nd |
| Population Density | # 388 | 73rd |
| Median Household Income | # 1041 | 29th |
| Housing Affordability Index | # 1420 | 97th |
| Per Capita Income | # 1058 | 28th |
| Diversity Index | # 712 | 52nd |
Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.
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