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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

Zip Code 03857, Newmarket, NH

ZIP Code 03857 Details

Zip Code:03857
State:NH [New Hampshire]
Multi County:No
City Alias(es):Newmarket
Area Code:603
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Eastern (GMT -05:00)
Observes Daylight Saving:Yes
Elevation:84 ft
State FIPS:33
County FIPS:015
Division:New England
Intro Date:<2004-10

ZIP Code 03857 2010 Census Demographics

Current Population:10,368
2010 Population:9,006
Households per ZIP Code:3,882
Average House Value:$337,200
Avg. Income Per Household:$83,070
Persons Per Household:2.32
White Population:8,459
Black Population:141
Hispanic Population:207
Asian Population:424
American Indian Population:73
Hawaiian Population:16
Other Population:67
Male Population:4,464
Female Population:4,542
Median Age:35.90 years
Male Median Age:35.00 years
Female Median Age:37.00 years

ZIP Code 03857 Other Demographics

# Residential Mailboxes:4,469
# Business Mailboxes:167
Total Delivery Receptacles:4,793
Number of Businesses:156
1st Quarter Payroll:$13,629,000
Annual Payroll:$55,855,000
# of Employees:1,340
Water Area:1.595 sq mi
Land Area:12.593 sq mi
118th Congressional District:01
118th Congressional Land Area:2463.65 sq mi
Single Family Delivery Units:2,535
Multi Family Delivery Units:1,167
# Residential Mailboxes:4,469
# Business Mailboxes:167
Total Delivery Receptacles:4,793

ZIP Code 03857 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 1,625 1,625 0
Retired Workers: 1,180 1,180 0
Disabled Workers: 215 215 0
Widow(er)s and Parents: 80 80 0
Spouses: 55 55 0
Children: 95 95 0
65+: 1,255 1,255 0
Monthly Benefits - All: $2,436,000 $2,436,000 $0
Monthly Benefits - Retired Workers: $1,924,000 $1,924,000 $0
Monthly Benefits - Widow(ers): $118,000 $118,000 $0

ZIP Code 03857 Statistical Areas

CBSA: 14460
CBSA Name: Boston-Cambridge-Newton, MA-NH
CBSA Type: Metro
CBSA Division: 40484
CBSA Division Name: Rockingham County-Strafford County, NH
CBSA Population:4,552,402
CBSA Division Population:418,366
MSA: 1122
MSA Name: Boston-Worcester-Lawrence, MA-NH-ME-CT CMSA
PMSA: 6450
PMSA Name: Portsmouth-Rochester, NH-ME PMSA
City State Key:V25625
Preferred Last Line Key:V25625
03856: Previous ZIP Code
Next ZIP Code: 03858


  1. U.S. Postal Service [Last Updated: 3/1/2023],
  2. Internal Data Creation [Last Updated: 3/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 3/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],