Dover, NH 03820 ZIP Code Profile

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Dover, NH

ZIP Code 03820: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Dover, NH 03820

  • ZIP Code Type: STANDARD
  • County: Strafford County
  • Centroid: Latitude 43.186, Longitude -70.914
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,079
  • PO Box Addresses: 0
  • Residential Addresses: 14,448
    • Multi-Family Addresses: 2,596
    • Single Family Addresses: 11,852

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


03820 ZIP Code Map

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Dover, NH 03820 Data & Demographics (As of July 1, 2017)


Total Population 32,186
Daytime Population: Workers 17,783
Daytime Population: Residents 14,077
Total Daytime Population (TDP) 31,860
Ratio TDP/Total Population1 0.99
Population in Households 31,213
Population in Familes 21,674
Population in Group Qrtrs 973
Population Density2 1,187
Diversity Index3 26


Median Household Income $62,928
Average Household Income $85,297
Per Capita Income $37,157


Total Housing Units 14,394 (100%)
Owner Occupied HU 6,893 (47.9%)
Renter Occupied HU 6,837 (47.5%)
Vacant Housing Units 664 ( 4.6%)
Median Home Value $257,422
Average Home Value $292,268


Total Households 13,730
Average Household Size 2.27
Family Households 7,462
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 0.98% 0.88%
Households 0.94% 0.89%
Families 0.77% 0.77%
Median Household Income   1.93%
Per Capita Income   2.5%

Dover, NH 03820 - Peer Comparisons by Rank and Percentile

The table below compares 03820 to the other 243 ZIP Codes in New Hampshire 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 # 5 98th
Population Density # 13 95th
Diversity Index # 16 94th
Median Household Income # 126 49th
Per Capita Income # 103 58th

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

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