Rockford, IL 61104 ZIP Code Profile

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Rockford, IL

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ZIP Code 61104: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Rockford, IL 61104

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 895
  • Single Family Addresses: 6,301
  • Multi-Family Addresses: 1,436
  • County: Winnebago County
  • Centroid: Latitude 42.256, Longitude -89.081
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

Neighborhood Data

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61104 ZIP Code Map

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Rockford, IL 61104 Data & Demographics (As of July 1, 2017)


Total Population 18,098
Daytime Population: Workers 16,899
Daytime Population: Residents 11,344
Total Daytime Population (TDP) 28,243
Ratio TDP/Total Population1 1.56
Population in Households 17,914
Population in Familes 13,279
Population in Group Qrtrs 184
Population Density2 4,080
Diversity Index3 81


Median Household Income $26,376
Average Household Income $36,405
Per Capita Income $14,111


Total Housing Units 8,542 (100%)
Owner Occupied HU 2,285 (26.8%)
Renter Occupied HU 4,583 (53.7%)
Vacant Housing Units 1,674 (19.6%)
Median Home Value $75,657
Average Home Value $86,926


Total Households 6,868
Average Household Size 2.61
Family Households 3,854
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population -0.32% -0.55%
Households -0.35% -0.51%
Families -0.63% -0.7%
Median Household Income   -0.53%
Per Capita Income   1.13%

Rockford, IL 61104 - Peer Comparisons by Rank and Percentile

The table below compares 61104 to the other 1,377 ZIP Codes in Illinois by rank and percentile using July 1, 2017 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 # 257 81st
Population Density # 135 90th
Diversity Index # 32 98th
Median Household Income # 1348 2nd
Per Capita Income # 1354 2nd

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

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