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Byron, IL Profile: Facts & Data

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Byron, Illinois - Basic Facts

The City of Byron had a population of 3,743 as of July 1, 2025.

The primary coordinate point for Byron is located at latitude 42.127 and longitude -89.2557 in Ogle County. The formal boundaries for the City of Byron encompass a land area of 3.57 sq. miles and a water area of 0 sq. miles. Ogle County is in the Central time zone (GMT -6).

The City of Byron 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 Byron is located within Township of Byron, a minor civil division (MCD) of Ogle County.


Jump to... (On This Page!)
  1. Byron 2025 Demographic Data
  2. Growth Rates for Byron (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 - 2025 Demographics
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Byron, IL Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 3,743 (100%)
Population in Households 3,642 (97.3%)
Population in Families 2,841 (75.9%)
Population in Group Quarters1 101 ( 2.7%)
Population Density 805
Diversity Index2 31
 
 

INCOME

Median Household Income $77,982
Average Household Income $93,601
% of Income for Mortgage4 16%
Per Capita Income $37,985
Wealth Index5 70
Socioeconomic Status Index6 Moderate (54.1)
 

HOUSING

Total HU (Housing Units) 1,621 (100%)
Owner Occupied HU 1,051 (64.8%)
Renter Occupied HU 463 (28.6%)
Vacant Housing Units 107 ( 6.6%)
Median Home Value $193,811
Average Home Value $214,253
Housing Affordability Index3 129
 

HOUSEHOLDS

Total Households 1,514
Average Household Size 2.41
Family Households 905
Average Family Size 3.00
NOTES
  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.
  6. 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.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population -0.21% -0.37%
Households 0.22% -0.08%
Families   -0.33%
Median Household Income   1.16%
Per Capita Income   1.97%
Owner Occupied HU   0.15%

Byron, IL - Peer Comparisons by Rank and Percentile

The table below compares Byron to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2025 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 # 388 74th
Population Density # 833 43rd
Median Household Income # 663 55th
Housing Affordability Index # 748 51st
Per Capita Income # 823 44th
Diversity Index # 512 65th

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

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