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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Rocky Hill, NJ

Rocky Hill, NJ Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 08553StandardSomerset682609

Timezone(s):Eastern (GMT -05:00)
Population:682 (More Details)
Male Population:346
Female Population:336
Median Age:46
ZIP Codes:1
Area Codes:1
Total Area:305 square miles (county)
Land Area:302 square miles (county)
Water Area:3 square miles (county)

Rocky Hill, NJ Demographic Information *

Total population682
Male population346
Female population336
Median age (years)45.9
White Population625
Black Population10
Indian Population0
Asian Population16
Hawaiian Population0
Hispanic Population33
Median age (Male)42.8
Median age (Female)48
Total households280
Family households (families)189
Average household size2.4
Average family size2.95
Total housing units292
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],