Zip code 03820: Dover, New Hampshire

Q: What city is zip code 03820?

03820 is assigned to Dover, New Hampshire. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 03820 in?

03820 is in Strafford County, New Hampshire.

Q: What is the population of 03820?

About 33,440 people live in 03820, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 03820?

The median household income in 03820 is $94,897.

Q: What zip codes are near 03820?

The closest zip codes to 03820 are 03821, 03822, 03823, 03869, 03878.

Residential delivery areaStrafford CountyEastern Time

Population

33,440

Median household income

$95K

U.S. $81K

Median home value

$436K

U.S. $333K

Median rent

$1,607/mo

U.S. $1,413

Median age

36.9

U.S. 38.9

Land area

27 sq mi

1,226 people/sq mi

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

About 03820

03820 is a suburban zip code in Dover, New Hampshire (Strafford County), covering 27 sq mi of land. About 33,440 people live here, or 1,226 per square mile. The median resident is 36.9 years old, compared with 38.9 nationally.

The median household earns $94,897 a year, 18% above the national median of $80,734. 8.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $436,100, or 4.6 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 $1,607 a month.

52% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 22.8 minutes each way, and 19% of workers work from home. The most common jobs among working residents are in management, sales and healthcare.

How 03820 compares

Sorted from highest to lowest national percentile

Bachelor's degree or higher52%
82nd
StrengthU.S. 35.7% · NH 40.6%48th of 239 in NH
Tech workers5.3%
81st
U.S. 3.8% · NH 4.3%40th of 239 in NH
Broadband access95.4%
79th
U.S. 91% · NH 92.9%78th of 239 in NH
Per capita income$52,784
76th
U.S. $44,673 · NH $52,798102nd of 239 in NH
Work from home18.7%
74th
U.S. 15.1% · NH 16.8%76th of 239 in NH
Median earnings per worker$58,147
72nd
U.S. $49,666 · NH $56,07996th of 239 in NH
Median household income$94,897
67th
U.S. $80,734 · NH $99,031127th of 234 in NH
Median home value$436,100
67th
U.S. $332,700 · NH $402,50069th of 235 in NH
Median gross rent$1,607
62nd
U.S. $1,413 · NH $1,49155th of 197 in NH
Government workers14.9%
59th
U.S. 14.5% · NH 13.1%94th of 239 in NH
Population33,440
56th
U.S. 334,922,499 · NH 1,394,8686th of 239 in NH
Healthcare workers9.8%
55th
U.S. 9.7% · NH 9.6%118th of 239 in NH
Residents 65 and older16.8%
52nd
U.S. 17.2% · NH 20.1%199th of 239 in NH
Population density1,226/sq mi
47th
U.S. 95/sq mi · NH 156/sq mi13th of 239 in NH
Self-employed workers9%
46th
U.S. 10% · NH 9.3%156th of 239 in NH
Uninsured rate6.3%
45th
U.S. 8.4% · NH 5.3%76th of 239 in NH
Veterans5.5%
45th
U.S. 6.2% · NH 7.6%201st of 239 in NH
Rent-burdened renters48.6%
42nd
U.S. 51.1% · NH 48.2%101st of 230 in NH
Unemployment rate4.1%
36th
U.S. 5.2% · NH 3.3%67th of 239 in NH
Median age36.9
34th
U.S. 38.9 · NH 43.3223rd of 239 in NH
Poverty rate8.3%
34th
U.S. 12.5% · NH 7.2%89th of 239 in NH
Foreign-born residents6%
34th
U.S. 14.1% · NH 6.1%39th of 239 in NH
Income inequality (Gini)0.417
34th
U.S. 0.483 · NH 0.444108th of 239 in NH
Average commute22.8 min
28th
U.S. 26.4 min · NH 26.7 min188th of 234 in NH
Homeownership rate52.7%
21st
U.S. 65.2% · NH 72.8%232nd of 239 in NH
Diversity index26.7
20th
U.S. 61.4 · NH 2433rd of 239 in NH
Residents under 1816.9%
14th
U.S. 22% · NH 18.2%143rd of 239 in NH
Housing vacancy2.5%
7th
U.S. 10.1% · NH 14.3%219th of 239 in NH

Measure	03820	Strafford	NH	U.S.	National percentile	Rank in NH
Bachelor's degree or higherStrength	52%	39.3%	40.6%	35.7%	82nd	48th of 239
Tech workers	5.3%	4.3%	4.3%	3.8%	81st	40th of 239
Broadband access	95.4%	93.5%	92.9%	91%	79th	78th of 239
Per capita income	$52,784	$46,304	$52,798	$44,673	76th	102nd of 239
Work from home	18.7%	16.2%	16.8%	15.1%	74th	76th of 239
Median earnings per worker	$58,147	$51,705	$56,079	$49,666	72nd	96th of 239
Median household income	$94,897	$88,570	$99,031	$80,734	67th	127th of 234
Median home value	$436,100	$362,800	$402,500	$332,700	67th	69th of 235
Median gross rent	$1,607	$1,488	$1,491	$1,413	62nd	55th of 197
Government workers	14.9%	16%	13.1%	14.5%	59th	94th of 239
Population	33,440	132,575	1,394,868	334,922,499	56th	6th of 239
Healthcare workers	9.8%	8.8%	9.6%	9.7%	55th	118th of 239
Residents 65 and older	16.8%	17.1%	20.1%	17.2%	52nd	199th of 239
Population density	1,226/sq mi	361/sq mi	156/sq mi	95/sq mi	47th	13th of 239
Self-employed workers	9%	8.2%	9.3%	10%	46th	156th of 239
Uninsured rate	6.3%	5.2%	5.3%	8.4%	45th	76th of 239
Veterans	5.5%	7.3%	7.6%	6.2%	45th	201st of 239
Rent-burdened renters	48.6%	50.3%	48.2%	51.1%	42nd	101st of 230
Unemployment rate	4.1%	3.5%	3.3%	5.2%	36th	67th of 239
Median age	36.9	38.2	43.3	38.9	34th	223rd of 239
Poverty rate	8.3%	8.7%	7.2%	12.5%	34th	89th of 239
Foreign-born residents	6%	4.4%	6.1%	14.1%	34th	39th of 239
Income inequality (Gini)	0.417	0.427	0.444	0.483	34th	108th of 239
Average commute	22.8 min	26 min	26.7 min	26.4 min	28th	188th of 234
Homeownership rate	52.7%	67.1%	72.8%	65.2%	21st	232nd of 239
Diversity index	26.7	22.8	24	61.4	20th	33rd of 239
Residents under 18	16.9%	17.6%	18.2%	22%	14th	143rd of 239
Housing vacancy	2.5%	8%	14.3%	10.1%	7th	219th 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

12%

5–17

11%

18–24

19%

25–34

13%

35–44

11%

45–54

12%

55–64

10%

65–74

75+

Median age

36.9

Under 18

16.9%

65 and over

16.8%

Race and ethnicity

White85%
Black1%
Hispanic3%
Asian5%
Native American0%
Pacific Islander0%
Other0.7%
Multiracial5%

Diversity index

26.7

U.S. 61.4

Foreign-born

U.S. 14.1%

Born in state

42.7%

Language spoken at home (households)

English only

90%

Spanish

Other Indo-European

Asian / Pacific

Other

0.7%

Households

Households: 15,062
Average household size: 2.2
Family households: 53.7%
Married couples: 42.5%
Living alone: 34.1%
Veterans (of adults): 5.5%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

11%

$25–50k

15%

$50–75k

14%

$75–100k

13%

$100–150k

18%

$150–200k

13%

$200k+

15%

Median household income

03820

$94,897

Strafford Co.

$88,570

New Hampshire

$99,031

United States

$80,734

Per capita income

$52,784

U.S. $44,673

Poverty rate

8.3%

U.S. 12.5%

Households earning $150K+

28.5%

U.S. 23%

Income inequality (Gini)

0.417

U.S. 0.483

Housing

Median home value

03820

$436,100

Strafford Co.

$362,800

New Hampshire

$402,500

United States

$332,700

Median gross rent

03820

$1,607

Strafford Co.

$1,488

New Hampshire

$1,491

United States

$1,413

Types of housing

Single-family

48%

2–4 units

17%

5–19 units

16%

20+ units

17%

Mobile home

Boat, RV, van

Housing units: 15,453
Owner-occupied: 52.7%
Vacant: 2.5%
Median year built: 1976
Median rooms: 4.9
Renters paying 30%+ of income: 48.6%
Renters paying 50%+ of income: 25.4%
Home value to income: 4.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

69%

Carpooled

Transit

Walked

Bicycle

Worked from home

19%

Other

Commute time (one way)

<10 min

10%

10–19

41%

20–29

26%

30–44

14%

45–59

60+

Average commute

22.8 min

U.S. 26.4 min

Unemployment

4.1%

U.S. 5.2%

In labor force

72.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

12%

Sales

11%

Healthcare

10%

Office and admin

Food service

Engineering and science

Education

Business and finance

Computer and math

Production

Construction and repair

Cleaning and personal care

Legal and social services

Transportation and moving

Arts, media and sports

Police and fire

Farming, fishing and forestry

0.5%

Industries

Health care and social assistance

15%

Manufacturing

14%

Professional and technical services

11%

Education

11%

Retail

10%

Restaurants and hotels

Finance, insurance and real estate

Public administration

Other services

Construction

Admin, support and management

Arts and recreation

Transportation, warehousing and utilities

Information

Wholesale

Agriculture and mining

0.8%

Median earnings per worker

$58,147

U.S. $49,666

Self-employed

U.S. 10%

Government workers

14.9%

U.S. 14.5%

Nonprofit workers

8.7%

U.S. 8.8%

Median earnings by type of work

Type of work	03820	U.S.
Management, business, science and arts	$79,311	$74,888
Service	$27,562	$26,804
Sales and office	$47,309	$40,476
Construction and maintenance	$65,309	$49,199
Production and transportation	$42,596	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

20%

Some college

15%

Associate's

11%

Bachelor's

34%

Graduate

18%

High school graduate or higher: 96.8%
Bachelor's degree or higher: 52%
Graduate or professional degree: 18.2%
Households with broadband: 95.4%
Cable, fiber or DSL: 84.3%
No internet access: 2.4%
Without health insurance: 6.3%
Limited-English households: 2.5%

Geography

City (USPS): Dover
State: New Hampshire
County: Strafford County
Center point: 43.1864° N, 70.8836° W
Land area: 27 sq mi
Water area: 2.3 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Dover98% of zip

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

Zip codes near 03820

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
03821	Dover, NH · PO box	0.9 mi	—	—	—
03822	Dover, NH · PO box	0.9 mi	—	—	—
03823	Madbury, NH	3 mi	2,203	$148,365	$476,900
03869	Rollinsford, NH	3.1 mi	2,456	$87,215	$413,500
03878	Somersworth, NH	4.6 mi	12,205	$75,136	$317,900
03824	Durham, NH	5.1 mi	15,080	$124,056	$504,300
03903	Eliot, ME	6.2 mi	7,146	$101,522	$498,900
03908	South Berwick, ME	7.3 mi	7,431	$98,289	$425,700
03839	Rochester, NH	7.7 mi	4,279	$88,346	$335,600
03861	Lee, NH	7.8 mi	4,576	$131,579	$480,600
03825	Barrington, NH	8.1 mi	9,489	$110,323	$399,100
03901	Berwick, ME	8.1 mi	8,175	$94,771	$369,100

Zip codes like 03820 elsewhere

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

Questions about 03820

What city is zip code 03820?

03820 is assigned to Dover, New Hampshire. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 03820 in?

03820 is in Strafford County, New Hampshire.

What is the population of 03820?

About 33,440 people live in 03820, according to the Census Bureau's American Community Survey.

What time zone is 03820 in?

03820 is in Eastern Time.

What is the median household income in 03820?

The median household income in 03820 is $94,897.

What zip codes are near 03820?

The closest zip codes to 03820 are 03821, 03822, 03823, 03869, 03878.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 03820, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.