Rock City, IL 61070 ZIP Code Profile

Related Place Profiles:
Rock City, IL | Rock Grove, IL

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ZIP Code 61070: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Rock City, IL 61070

Not Acceptable, USPS
Rock Grove, IL 61070

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 18
  • Single Family Addresses: 373
  • Multi-Family Addresses: 0
  • County: Stephenson County
  • Centroid: Latitude 42.41, Longitude -89.473
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

Neighborhood Data

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61070 ZIP Code Map

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Rock City, IL 61070 Data & Demographics (As of July 1, 2016)


Total Population 1,001
Population in Households 1,001
Population in Familes 888
Population in Group Qrtrs 0
Population Density1 31
Diversity Index2 12


Total Households 385
Average Household Size 2.6
Family Households 301
Average Family Size 3


Total Housing Units 440 (100%)
Owner Occupied HU 330 (75.0%)
Renter Occupied HU 55 (12.5%)
Vacant Housing Units 55 (12.5%)
Median Home Value $144,037
Average Home Value $179,697


Median Household Income $55,570
Average Household Income $70,670
Per Capita Income $27,181
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.44% -0.48%
Households -0.29% -0.37%
Families -0.42% -0.47%
Median Household Income   1.74%
Per Capita Income   2.29%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Rock City, IL 61070 - Peer Comparisons by Rank and Percentile

The table below compares 61070 to the other 1,378 ZIP Codes in Illinois by rank and percentile using July 1, 2016 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 # 936 32nd
Population Density1 # 898 35th
Diversity Index2 # 695 49th
Median Household Income # 582 58th
Per Capita Income # 631 54th

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

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