Oswego, IL Profile: Facts & Data


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Oswego, Illinois - Basic Facts

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The Village of Oswego had a population of 35,121 as of July 1, 2022. Oswego ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Oswego is located at latitude 41.6828 and longitude -88.3515 in Kendall County. The formal boundaries for the Village of Oswego encompass a land area of 15.56 sq. miles and a water area of 0.12 sq. miles. Kendall County is in the Central time zone (GMT -6). The elevation is 640 feet.

The Village of Oswego 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 Oswego is located within Township of Oswego, a minor civil division (MCD) of Kendall County.

Alternate Unofficial Names for Oswego: Lodi, Oswego Mills.

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  1. Oswego 2022 Demographic Data
  2. Growth Rates for Oswego (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Illinois Research Tools (Easy Tools & Current Data)
  3. Illinois Data Comparison Tool - 2022 Demographics

Oswego, IL Data & Demographics (As of July 1, 2022)


Total Population 35,121 (100%)
Population in Households 35,044 (99.8%)
Population in Families 31,441 (89.5%)
Population in Group Quarters1 77 ( 0.2%)
Population Density 2,359
Diversity Index2 63


Median Household Income $115,768
Average Household Income $141,538
% of Income for Mortgage4 13%
Per Capita Income $47,110
Wealth Index5 145


Total HU (Housing Units) 12,175 (100%)
Owner Occupied HU 10,545 (86.6%)
Renter Occupied HU 1,105 ( 9.1%)
Vacant Housing Units 525 ( 4.3%)
Median Home Value $279,544
Average Home Value $309,270
Housing Affordability Index3 164


Total Households 11,650
Average Household Size 3.01
Family Households 9,156
Average Family Size 3.00
  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.


2020-2022 2022-2027
Population 0.69% 0.19%
Households 0.67% 0.26%
Families   0.23%
Median Household Income   1.84%
Per Capita Income   2.35%
Owner Occupied HU   0.11%

Oswego, IL - Peer Comparisons by Rank and Percentile

The table below compares Oswego to the other 1,466 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2022 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 # 54 96th
Population Density # 187 87th
Median Household Income # 81 95th
Housing Affordability Index # 606 41st
Per Capita Income # 202 86th
Diversity Index # 159 89th

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

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