Zip code 03857: Newmarket, New Hampshire

Q: What city is zip code 03857?

03857 is assigned to Newmarket, New Hampshire. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 03857 in?

03857 is in Rockingham County, New Hampshire.

Q: What is the population of 03857?

About 9,463 people live in 03857, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 03857?

The median household income in 03857 is $100,845.

Q: What zip codes are near 03857?

The closest zip codes to 03857 are 03856, 03824, 03861, 03885, 03843.

Residential delivery areaRockingham CountyEastern Time

Population

9,463

Median household income

$101K

U.S. $81K

Median home value

$455K

U.S. $333K

Median rent

$1,671/mo

U.S. $1,413

Median age

41.2

U.S. 38.9

Land area

13 sq mi

751 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 03857

03857 is a suburban zip code in Newmarket, New Hampshire (Rockingham County), covering 13 sq mi of land. About 9,463 people live here, or 751 per square mile. The median resident is 41.2 years old, compared with 38.9 nationally.

The median household earns $100,845 a year, 25% above the national median of $80,734. 4.6% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $455,000, or 4.5 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 53% of occupied homes are lived in by their owners, and renters pay a median of $1,671 a month.

50% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 28.2 minutes each way, and 17% of workers work from home. The most common jobs among working residents are in management; office and administrative support; and sales.

How 03857 compares

Sorted from highest to lowest national percentile

Per capita income$58,507
83rd
StrengthU.S. $44,673 · NH $52,79870th of 239 in NH
Bachelor's degree or higher49.7%
79th
U.S. 35.7% · NH 40.6%58th of 239 in NH
Median earnings per worker$62,152
79th
U.S. $49,666 · NH $56,07967th of 239 in NH
Broadband access95.2%
78th
U.S. 91% · NH 92.9%81st of 239 in NH
Median household income$100,845
72nd
U.S. $80,734 · NH $99,031113th of 234 in NH
Median home value$455,000
70th
U.S. $332,700 · NH $402,50060th of 235 in NH
Work from home17.3%
70th
U.S. 15.1% · NH 16.8%90th of 239 in NH
Median gross rent$1,671
66th
U.S. $1,413 · NH $1,49142nd of 197 in NH
Median age41.2
66th
U.S. 38.9 · NH 43.3195th of 239 in NH
Average commute28.2 min
64th
U.S. 26.4 min · NH 26.7 min107th of 234 in NH
Tech workers3.6%
62nd
U.S. 3.8% · NH 4.3%79th of 239 in NH
Government workers15.2%
61st
U.S. 14.5% · NH 13.1%86th of 239 in NH
Residents 65 and older16.1%
47th
U.S. 17.2% · NH 20.1%206th of 239 in NH
Healthcare workers8.9%
41st
U.S. 9.7% · NH 9.6%139th of 239 in NH
Population density751/sq mi
39th
U.S. 95/sq mi · NH 156/sq mi23rd of 239 in NH
Veterans5%
38th
U.S. 6.2% · NH 7.6%212th of 239 in NH
Self-employed workers8.2%
35th
U.S. 10% · NH 9.3%174th of 239 in NH
Rent-burdened renters46.3%
33rd
U.S. 51.1% · NH 48.2%115th of 230 in NH
Foreign-born residents5%
29th
U.S. 14.1% · NH 6.1%55th of 239 in NH
Income inequality (Gini)0.408
26th
U.S. 0.483 · NH 0.444130th of 239 in NH
Homeownership rate52.9%
21st
U.S. 65.2% · NH 72.8%231st of 239 in NH
Uninsured rate3.9%
21st
U.S. 8.4% · NH 5.3%150th of 239 in NH
Population9,463
15th
U.S. 334,922,499 · NH 1,394,86838th of 239 in NH
Housing vacancy3.4%
15th
U.S. 10.1% · NH 14.3%201st of 239 in NH
Poverty rate4.6%
10th
StrengthU.S. 12.5% · NH 7.2%164th of 239 in NH
Diversity index16.7
9th
U.S. 61.4 · NH 24100th of 239 in NH
Residents under 1815.6%
9th
U.S. 22% · NH 18.2%163rd of 239 in NH
Unemployment rate1%
2nd
StrengthU.S. 5.2% · NH 3.3%199th of 239 in NH

Measure	03857	Rockingham	NH	U.S.	National percentile	Rank in NH
Per capita incomeStrength	$58,507	$61,558	$52,798	$44,673	83rd	70th of 239
Bachelor's degree or higher	49.7%	45.7%	40.6%	35.7%	79th	58th of 239
Median earnings per worker	$62,152	$65,398	$56,079	$49,666	79th	67th of 239
Broadband access	95.2%	95%	92.9%	91%	78th	81st of 239
Median household income	$100,845	$118,331	$99,031	$80,734	72nd	113th of 234
Median home value	$455,000	$497,500	$402,500	$332,700	70th	60th of 235
Work from home	17.3%	19.4%	16.8%	15.1%	70th	90th of 239
Median gross rent	$1,671	$1,687	$1,491	$1,413	66th	42nd of 197
Median age	41.2	45	43.3	38.9	66th	195th of 239
Average commute	28.2 min	28.9 min	26.7 min	26.4 min	64th	107th of 234
Tech workers	3.6%	4.9%	4.3%	3.8%	62nd	79th of 239
Government workers	15.2%	12.7%	13.1%	14.5%	61st	86th of 239
Residents 65 and older	16.1%	20.4%	20.1%	17.2%	47th	206th of 239
Healthcare workers	8.9%	9.4%	9.6%	9.7%	41st	139th of 239
Population density	751/sq mi	459/sq mi	156/sq mi	95/sq mi	39th	23rd of 239
Veterans	5%	7.3%	7.6%	6.2%	38th	212th of 239
Self-employed workers	8.2%	9.9%	9.3%	10%	35th	174th of 239
Rent-burdened renters	46.3%	50.3%	48.2%	51.1%	33rd	115th of 230
Foreign-born residents	5%	5.2%	6.1%	14.1%	29th	55th of 239
Income inequality (Gini)	0.408	0.430	0.444	0.483	26th	130th of 239
Homeownership rate	52.9%	78.4%	72.8%	65.2%	21st	231st of 239
Uninsured rate	3.9%	4.1%	5.3%	8.4%	21st	150th of 239
Population	9,463	319,082	1,394,868	334,922,499	15th	38th of 239
Housing vacancy	3.4%	7.4%	14.3%	10.1%	15th	201st of 239
Poverty rateStrength	4.6%	4.8%	7.2%	12.5%	10th	164th of 239
Diversity index	16.7	19.5	24	61.4	9th	100th of 239
Residents under 18	15.6%	18.5%	18.2%	22%	9th	163rd of 239
Unemployment rateStrength	1%	3.6%	3.3%	5.2%	2nd	199th of 239

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

11%

5–17

18–24

18%

25–34

16%

35–44

14%

45–54

14%

55–64

10%

65–74

75+

Median age

41.2

Under 18

15.6%

65 and over

16.1%

Race and ethnicity

White91%
Black0.6%
Hispanic1%
Asian1%
Native American0.1%
Pacific Islander0%
Other0.2%
Multiracial5%

Diversity index

16.7

U.S. 61.4

Foreign-born

U.S. 14.1%

Born in state

38.7%

Language spoken at home (households)

English only

92%

Spanish

Other Indo-European

Asian / Pacific

0.5%

Other

0.2%

Households

Households: 4,345
Average household size: 2.2
Family households: 55.1%
Married couples: 46.6%
Living alone: 31.3%
Veterans (of adults): 5%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

$25–50k

14%

$50–75k

16%

$75–100k

12%

$100–150k

24%

$150–200k

11%

$200k+

15%

Median household income

03857

$100,845

Rockingham Co.

$118,331

New Hampshire

$99,031

United States

$80,734

Per capita income

$58,507

U.S. $44,673

Poverty rate

4.6%

U.S. 12.5%

Households earning $150K+

26.1%

U.S. 23%

Income inequality (Gini)

0.408

U.S. 0.483

Housing

Median home value

03857

$455,000

Rockingham Co.

$497,500

New Hampshire

$402,500

United States

$332,700

Median gross rent

03857

$1,671

Rockingham Co.

$1,687

New Hampshire

$1,491

United States

$1,413

Types of housing

Single-family

52%

2–4 units

5–19 units

12%

20+ units

24%

Mobile home

Boat, RV, van

0.3%

Housing units: 4,500
Owner-occupied: 52.9%
Vacant: 3.4%
Median year built: 1983
Median rooms: 4.9
Renters paying 30%+ of income: 46.3%
Renters paying 50%+ of income: 21.2%
Home value to income: 4.5× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

74%

Carpooled

Transit

0.4%

Walked

Bicycle

Worked from home

17%

Other

Commute time (one way)

<10 min

10–19

18%

20–29

35%

30–44

23%

45–59

60+

10%

Average commute

28.2 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

75.4%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

14%

Office and admin

11%

Sales

10%

Business and finance

10%

Healthcare

Education

Engineering and science

Construction and repair

Food service

Production

Computer and math

Legal and social services

Cleaning and personal care

Police and fire

Arts, media and sports

Transportation and moving

Farming, fishing and forestry

0.5%

Industries

Health care and social assistance

17%

Manufacturing

12%

Professional and technical services

11%

Education

11%

Retail

Restaurants and hotels

Finance, insurance and real estate

Transportation, warehousing and utilities

Construction

Public administration

Other services

Wholesale

Arts and recreation

Admin, support and management

Agriculture and mining

Information

0.5%

Median earnings per worker

$62,152

U.S. $49,666

Self-employed

8.2%

U.S. 10%

Government workers

15.2%

U.S. 14.5%

Nonprofit workers

11.9%

U.S. 8.8%

Median earnings by type of work

Type of work	03857	U.S.
Management, business, science and arts	$73,685	$74,888
Service	$29,631	$26,804
Sales and office	$54,025	$40,476
Construction and maintenance	$70,224	$49,199
Production and transportation	$61,000	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

16%

Some college

18%

Associate's

13%

Bachelor's

32%

Graduate

18%

High school graduate or higher: 97.6%
Bachelor's degree or higher: 49.7%
Graduate or professional degree: 18.2%
Households with broadband: 95.2%
Cable, fiber or DSL: 82.1%
No internet access: 2.5%
Without health insurance: 3.9%
Limited-English households: 0.3%

Geography

City (USPS): Newmarket
State: New Hampshire
County: Rockingham County
Center point: 43.0709° N, 70.9469° W
Land area: 13 sq mi
Water area: 1.6 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Newmarket (unincorporated)18% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 03857

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
03856	Newfields, NH	2.5 mi	2,023	$197,885	$646,400
03824	Durham, NH	3.5 mi	15,080	$124,056	$504,300
03861	Lee, NH	4.5 mi	4,576	$131,579	$480,600
03885	Stratham, NH	4.5 mi	7,754	$151,998	$655,400
03843	Hampton, NH · PO box	5.6 mi	—	—	—
03840	Greenland, NH	5.6 mi	4,106	$162,837	$662,800
03833	Exeter, NH	6.6 mi	22,817	$119,393	$480,500
03801	Portsmouth, NH	7.1 mi	23,484	$106,756	$699,900
03823	Madbury, NH	7.2 mi	2,203	$148,365	$476,900
03042	Epping, NH	7.3 mi	7,430	$104,220	$436,900
03862	North Hampton, NH	8.6 mi	4,610	$144,583	$670,400
03820	Dover, NH	8.6 mi	33,440	$94,897	$436,100

Zip codes like 03857 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 03857

What city is zip code 03857?

03857 is assigned to Newmarket, New Hampshire. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 03857 in?

03857 is in Rockingham County, New Hampshire.

What is the population of 03857?

About 9,463 people live in 03857, according to the Census Bureau's American Community Survey.

What time zone is 03857 in?

03857 is in Eastern Time.

What is the median household income in 03857?

The median household income in 03857 is $100,845.

What zip codes are near 03857?

The closest zip codes to 03857 are 03856, 03824, 03861, 03885, 03843.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 03857, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.