Residential delivery area · Illinois
ZIP Code 62951: Johnston City, IL
ZIP code 62951 uses the postal name Johnston City, Illinois and lies entirely in Williamson County (Census 2020 ZIP-county file). About 5,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $50,657 (Census Bureau, ACS 2020-2024). By Census place, 8% of its land lies in Johnston City; 92% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Johnston City · its only residential ZIP
- County
- Williamson County
- Census places
- Johnston City
- Micro area
- Marion-Herrin, IL
- House district
- IL-12 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 27.7 sq mi · 193 people per sq mi
Where is ZIP code 62951?
62951 centers on 37.826°, -88.927° and covers 27.7 square miles of land plus 0.7 of water. It borders 4 ZIP codes: 62896, 62948, 62959, 62890.
The map draws ZIP code areas only. For the streets inside 62951, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 62951 compare with the rest of Williamson County?
| Measure | 62951 | In Williamson County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 5,342 | 6th of 21 | 466th of 1,396 |
| Median household income | $51k | 13th of 15 | 746th of 797 |
| Median home value | $100k | 13th of 15 | 770th of 842 |
Its median household income is higher than in 15% of U.S. residential ZIP codes, and it is denser than 62% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 62951?
The 2020 Census counted 5,136 people in 62951; the ACS, which samples households over 2020-2024, estimates 5,342. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 5,342±565 (90% margin)
- 2020 Census count
- 5,136
- Households
- 2,440
- Median age
- 50.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 62951?
Of the 5,342 people the ACS estimates in 62951, 17.6% are under 18 and 21.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.3%).
- Under 1817.6%
- 18 to 6460.8%
- 65 and older21.6%
- White, not Hispanic92.3%
- Other or two or more3.8%
- Asian, not Hispanic1.6%
- Hispanic or Latino1.6%
- Black, not Hispanic0.7%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 62951 earn?
Median household income is $50,657 (ACS 2020-2024), the 13th highest of the 15 ranked ZIP codes in Williamson County.
- Median household income
- $50,657±$8,932
- Income per person
- $30,645
- Below the poverty line
- 14.5%
- Unemployed (of the labor force)
- 6.6%
- Adults 25+ with a bachelor's degree
- 15.8%
- Adjusted gross income per tax return, 2022
- $54,3842,310 returns; wages 75% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 62951?
FHFA's house price index for 62951, built from repeat sales and appraisals of the same homes, rose 43% from 2015 to 2025 and rose 46% from 2020 to 2025, and moved −4.9% in 2025.
- Median home value (owners' estimate)
- $99,700
- Median gross rent
- $943
- Homes owned by their occupants
- 77.8%
- Housing units
- 2,572
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 62951?
80 business establishments had a location in this ZIP code in 2023, 8 more than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)11
- Construction10
- Retail trade10
- Accommodation and food services9
- Health care and social assistance8
- Finance and insurance7
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 62951?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 62896 | West Frankfort | 10,627 | $56k | 4.7 mi |
| 62948 | Herrin | 12,758 | $61k | 5.4 mi |
| 62959 | Marion | 27,793 | $71k | 7.9 mi |
| 62890 | Thompsonville | 2,377 | $54k | 11.7 mi |
| 62841 | Freeman Spur | 118 | $32k | 4.4 mi (near) |
| 62933 | Energy | 1,101 | $68k | 6.2 mi (near) |
| 62874 | Orient | 440 | $41k | 6.9 mi (near) |
| 62999 | Zeigler | 1,267 | $42k | 7.7 mi (near) |
| 62974 | Pittsburg | 1,536 | $64k | 7.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.