Walnut Hill, IL Profile: Facts & Data


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Walnut Hill, Illinois - Basic Facts

The Village of Walnut Hill had a population of 111 as of July 1, 2020. Walnut Hill ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Walnut Hill is located at latitude 38.4773 and longitude -89.0434 in Marion County. The formal boundaries for the Village of Walnut Hill encompass a land area of 0.37 sq. miles and a water area of 0 sq. miles. Marion County is in the Central time zone (GMT -6). The elevation is 571 feet.

The Village of Walnut Hill (GNIS ID: 2400088) 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 Walnut Hill is located within Township of Centralia, a minor civil division (MCD) of Marion County.

Alternate Unofficial Names for Walnut Hill: Walnuthill.


Walnut Hill, IL Data & Demographics (As of July 1, 2020)


Total Population 111 (100%)
Population in Households 111 (100.0%)
Population in Families 95 (85.6%)
Population in Group Quarters1 0
Population Density 292
Diversity Index2 14


Median Household Income $76,279
Average Household Income $86,525
% of Income for Mortgage4 0%
Per Capita Income $34,809
Wealth Index5 113


Total HU (Housing Units) 56 (100%)
Owner Occupied HU 36 (64.3%)
Renter Occupied HU 4 ( 7.1%)
Vacant Housing Units 16 (28.6%)
Median Home Value $125,000
Average Home Value $145,833
Housing Affordability Index3 0


Total Households 40
Average Household Size 2.78
Family Households 30
Average Family Size 3
  1. 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.
  2. 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.
  3. 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.
  4. 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).
  5. 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.


2010-2020 2020-2025
Population 0.27% -0.18%
Households 0.5% 0.0%
Families 1.03% 0.0%
Median Household Income   0.73%
Per Capita Income   2.25%
Owner Occupied HU   0.0%


Walnut Hill, IL - Peer Comparisons by Rank and Percentile

The table below compares Walnut Hill to the other 1,369 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2020 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 # 1301 5th
Population Density # 1201 12th
Median Household Income # 270 80th
Housing Affordability Index # 21 2nd
Per Capita Income # 350 75th
Diversity Index # 681 50th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

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