Saint Augustine, IL Profile: Facts & Data

The Village of Saint Augustine had a population of 117 as of July 1, 2024. Saint Augustine 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 Saint Augustine is located at latitude 40.7184 and longitude -90.411 in Knox County. The formal boundaries for the Village of Saint Augustine encompass a land area of 0.6 sq. miles and a water area of 0 sq. miles. Knox County is in the Central time zone (GMT -6).

The Village of Saint Augustine 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.

Saint Augustine, IL Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	117 (100%)
Population in Households	117 (100.0%)
Population in Families	91 (77.8%)
Population in Group Quarters¹	0
Population Density	197
Diversity Index²	19


INCOME
Median Household Income	$52,968
Average Household Income	$64,505
% of Income for Mortgage⁴	0%
Per Capita Income	$32,528
Wealth Index⁵	51
Socioeconomic Status Index⁶	Moderate (49.3)

HOUSING
Total HU (Housing Units)	64 (100%)
Owner Occupied HU	48 (75.0%)
Renter Occupied HU	11 (17.2%)
Vacant Housing Units	5 ( 7.8%)
Median Home Value	$78,261
Average Home Value	$134,375
Housing Affordability Index³	0

HOUSEHOLDS
Total Households	59
Average Household Size	1.98
Family Households	37
Average Family Size	2.00

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.

Saint Augustine, IL - Peer Comparisons by Rank and Percentile

The table below compares Saint Augustine 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.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.40%	-1.41%
Households	-1.90%	-0.34%
Families		-1.68%
Median Household Income		-0.19%
Per Capita Income		4.58%
Owner Occupied HU		-0.85%

Variable Description	Rank	Percentile
Total Population	# 1315	10th
Population Density	# 1325	9th
Median Household Income	# 1259	14th
Housing Affordability Index	# 136	9th
Per Capita Income	# 1102	25th
Diversity Index	# 826	44th

Saint Augustine, IL Profile: Facts & Data

Saint Augustine, Illinois - Basic Facts

Saint Augustine, IL Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Saint Augustine, IL - Peer Comparisons by Rank and Percentile

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Knox County