US ZIP Code Map

ZIP code

03857

Newmarket, NH

STANDARD

03857 covers Newmarket in Rockingham County, with 9,431 people in the ACS estimate.

Map of 03857, Newmarket

ZIP code map

ACS population

9,431

Median household income

$94,345

Median home value

$384,900

About ZIP code 03857

Type

STANDARD

City

Newmarket

County

Rockingham County

Timezone

America/New_York

Area codes

603

Land area

12.6 sq mi

Water area

1.59 sq mi

Households

4,443

Median gross rent

$1,648

More enterprise fields

Timezone
America/New_York
Area Codes
603
World Region
NA
Country
US
Housing Count
4,398
Irs Estimated Households
5,230
Population Count
9,430
Irs Estimated Population
8,470

People in 03857

Race

  • White8,390
  • Black or African American86
  • American Indian or Alaska Native12
  • Asian340
  • Native Hawaiian and Pacific Islander13
  • Other race69
  • Two or more races520

Hispanic or Latino (any race): 301

Age

  • Under 10855
  • 10 to 19859
  • 20 to 291,602
  • 30 to 391,489
  • 40 to 491,152
  • 50 to 591,276
  • 60 to 691,304
  • 70 to 79657
  • 80 and older236

Income and housing in 03857

Poverty rate

4.3%

Median earnings

$53,518

Median household income

$94,345

Median home value

$384,900

Median gross rent

$1,648

Education

  • High school graduate97.9%
  • Bachelor's degree49.7%
  • Graduate degree18.0%

Places covering 03857

Cities and places

Counties

38.5% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 03857

IRS populationACS population
10,1855,093020052023

Hover a year for IRS and ACS values.

ZIP codes near 03857

  1. 03856Newfields2.6 miPop 2,010 · Income $191,625
  2. 03885Stratham3.8 miPop 7,742 · Income $141,438
  3. 03861Lee4.1 miPop 4,558 · Income $140,321
  4. 03824Durham4.3 miPop 15,054 · Income $126,658
  5. 03840Greenland6.2 miPop 4,070 · Income $147,132
  6. 03833Exeter6.9 miPop 22,676 · Income $110,566
  7. 03823Madbury6.9 miPop 2,121 · Income $144,635
  8. 03042Epping7.1 miPop 7,300 · Income $101,354
  9. 03801Portsmouth8.2 miPop 23,231 · Income $106,520
  10. 03802Portsmouth8.2 miPop 996 · Income —
  11. 03803Portsmouth8.2 miPop — · Income —
  12. 03804Portsmouth8.2 miPop 93 · Income —

ZIP code 03857 FAQ

What city is ZIP code 03857 in?
03857 is in Newmarket, NH.
What county is 03857 in?
03857 is in Rockingham County.
What is the median household income in 03857?
The median household income in 03857 is $94,345.
Which ZIP codes are near 03857?
Use the radius tool on this page to list ZIP codes within a chosen distance of 03857.