03584 ZIP Code — Lancaster, NH

Coos County, New Hampshire

ZIP code 03584 is located in Lancaster, New Hampshire, within Coos County. It covers approximately 62.07 square miles and serves a population of 3,440 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03584

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $184,600. Owner-occupancy is high at 79%, well above the national average.

Median household income is $75,987. The poverty rate of 7% is below the national average. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with education and healthcare as the leading industry. The average commute of 21 minutes is near the national average.

Educational attainment is near the national average, with 26% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03584 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,440

population

62.07

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03584 ZIP code map

Cities in ZIP code 03584

Below are the cities the US Postal Service accepts for ZIP code 03584. Using any city not on this list may result in mail delivery delays.

City	Status
Lancaster	Acceptable
Lancaster	Preferred

Nearby ZIP codes

05906 Lunenburg (8 mi) 03582 Groveton (8 mi) 03583 Jefferson (9 mi) 05858 North Concord (11.8 mi) 03598 Whitefield (11.9 mi) 05904 Gilman (13.4 mi) 03570 Berlin (14.3 mi) 05905 Guildhall (15.6 mi) 05824 Concord (15.7 mi) 03590 North Stratford (15.8 mi) 03561 Littleton (17.3 mi) 03574 Bethlehem (17.3 mi)

Demographics updated 05/2026

Population
Total population	3,440
Population density	55 / sq mi
State FIPS	33
County FIPS	007

Geography
Land area	62.07 sq mi
Water area	1.30 sq mi
Latitude	44.5001
Longitude	-71.5447
Timezone	Eastern (ET)
Area code	603

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.2%	51.3%	31.0%
$50k – $100k	33.6%	30.7%	31.2%
$100k – $200k	18.9%	15.6%	28.1%
Over $200k	5.3%	2.5%	9.7%

Demographics & statistics

3,440

Population

People per sq mi

45.6

Median age

$75,987

Median household income

$36,964

Per capita income

$184,600

Median home value

$916

Median monthly rent

79.0%

Home ownership

6.8%

Poverty rate

4.2%

Unemployment

1,463

Housing units

26.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

101

10–14

104

128

15–19

131

20–24

217

25–34

222

165

35–44

169

229

45–54

236

105

55–59

107

139

60–64

143

208

65–74

213

113

75–84

116

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	717	20.8%
18 and over	2,723	79.2%
65 and over	790	23.0%
Median age	45.6 years

Race & ethnicity

White 96.9%

Two or more races 1.7%

Hispanic or Latino 0.8%

Asian 0.4%

Other race 0.1%

Group	Count	%
White	3,361	96.9%
Two or more races	58	1.7%
Hispanic or Latino	27	0.8%
Asian	15	0.4%
Other race	5	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.2%	51.3%	31.0%
$50k – $100k	33.6%	30.7%	31.2%
$100k – $200k	18.9%	15.6%	28.1%
Over $200k	5.3%	2.5%	9.7%

Under $10k 2.1%

$10k–$15k 4.1%

$15k–$25k 5.7%

$25k–$35k 6.8%

$35k–$50k 12.0%

$50k–$75k 18.1%

$75k–$100k 12.7%

$100k–$150k 28.1%

$150k–$200k 7.5%

$200k+ 2.8%

Range	% of households
Under $10k	2.1%
$10k–$15k	4.1%
$15k–$25k	5.7%
$25k–$35k	6.8%
$35k–$50k	12.0%
$50k–$75k	18.1%
$75k–$100k	12.7%
$100k–$150k	28.1%
$150k–$200k	7.5%
$200k+	2.8%
Median income	$75,987

Housing

Home values

Under $50k 3.1%

$50k–$100k 8.3%

$100k–$150k 22.0%

$150k–$200k 28.5%

$200k–$300k 22.7%

$300k–$500k 12.9%

$500k–$1M 2.4%

Housing overview

Metric	Value
Median home value	$184,600
Median rent / month	$916
Owner occupied	79.0%
Renter occupied	21.0%
Vacant	18.1%
Single-family detached	73.6%
Large apartment buildings	3.1%
Mobile homes	4.4%
Median rooms	6.0
Avg household size (owned)	2.43

Year built

Era	%
2020 or later	0.0%
2010–2019	1.4%
2000–2009	11.8%
1990–1999	7.4%
1980–1989	3.9%
1970–1979	6.1%
1960–1969	4.5%
1950–1959	6.5%
1940–1949	3.7%
1939 or earlier	54.8%

Bedrooms

Size	% of units
No bedroom (studio)	3.2%
1 bedroom	14.8%
2 bedrooms	21.1%
3 bedrooms	42.3%
4 bedrooms	16.5%
5+ bedrooms	2.1%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	32.0%
2 vehicles	50.7%
3 or more	13.6%

Heating fuel

Fuel type	%
Electricity	1.3%
Propane / LP gas	9.8%
Fuel oil	67.6%
Wood	14.6%
No fuel used	2.6%

Households & families

Household type	Count	%
Married-couple family	635	43.9%
Cohabiting couple	231	16.0%
Male householder, no spouse	264	18.3%
Female householder, no spouse	316	21.9%
Households with children under 18	411	28.4%
Households with seniors (65+)	607	42.0%
Average household size	2.29

Marital status

Status	Male	Female
Never married	34.5%	28.2%
Married	44.1%	45.0%
Separated	2.0%	0.2%
Widowed	5.5%	13.1%
Divorced	13.9%	13.5%

Education

Less than 9th grade 4.1%

Some HS, no diploma 2.5%

HS graduate 35.2%

Some college, no degree 17.0%

Associate's degree 14.8%

Bachelor's degree 16.5%

Graduate / professional 9.8%

Metric	%
HS diploma or higher	93.3%
Bachelor's or higher	26.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	11	1.6%
Kindergarten	17	2.5%
Elementary school	270	40.2%
High school	254	37.8%
College / grad school	120	17.9%

Employment

Industry of employment

Education & healthcare 21.2%

Manufacturing 14.9%

Retail trade 13.5%

Public administration 9.6%

Professional & management 9.3%

Finance & real estate 7.5%

Other services 7.1%

Construction 5.5%

Arts, food & hospitality 5.5%

Transportation & utilities 2.7%

Wholesale trade 1.4%

Agriculture & mining 1.0%

Information 0.8%

Occupation

Category	%
Management, business & arts	28.4%
Service	15.8%
Sales & office	30.0%
Natural resources & construction	9.2%
Production & transportation	16.6%

Employment type

Type	%
Private sector	65.7%
Government	18.9%
Self-employed	14.0%
Unpaid family workers	1.4%

Commute

Method	%
Drive alone	74.7%
Carpool	7.3%
Public transit	0.1%
Walk	1.7%
Work from home	12.4%
Other means	3.9%
Avg commute (minutes)	21.0

Poverty

All people 6.8%

Under 18 years 8.6%

18 and over 6.4%

Married-couple families 0.0%

Female-led households 1.5%

Income support

Source	% of households
Social Security	46.3%
Retirement income	30.8%
Supplemental Security	2.9%
Cash public assistance	0.8%
Food stamps / SNAP	7.8%

Health indicators

Condition	%
Obesity	34.3%
High blood pressure	31.4%
High cholesterol	33.3%
Diabetes	10.6%
Heart disease	7.3%
Stroke	3.3%
Asthma	10.8%
Arthritis	31.4%
Kidney disease	3.1%
Pulmonary disease	7.9%
Cancer	8.0%

Behavior / access	%
Smoking	17.2%
Binge drinking	16.9%
No physical activity	22.9%
Less than 7 hrs sleep	34.1%
Depression	22.9%
Fair or poor health	14.0%
Poor mental health	15.0%
Poor physical health	11.3%
No health insurance	11.7%
Visited doctor (checkup)	73.6%
Visited dentist	60.6%
Cholesterol screening	91.1%
Teeth loss	13.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	187	6.9%

Disability	%
Any disability	13.1%
Under 18	2.1%
18–64 years	8.6%
65 and over	36.1%

Health insurance coverage

Type	%
Private insurance	69.1%
Public insurance	39.0%
No insurance	5.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,270	95.1%
Spanish	39	1.2%
Other Indo-European	0	0.0%
Asian & Pacific Islander	24	0.7%
Other languages	15	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,334	96.9%
Born in same state	3,310	96.2%
Born in different state	1,678	48.8%
Foreign born	24	0.7%
Naturalized citizen	106	3.1%
Not a US citizen	69	65.1%

Ancestry

Ancestry	Count	%
French	761	22.1%
Italian	416	12.1%
German	387	11.3%
Arab	127	3.7%

Ancestry	Count	%
Polish	27	0.8%
Irish	20	0.6%
Dutch	6	0.2%
Norwegian	4	0.1%

Technology access

Metric	% of households
Computer access	42.0%
Internet access	93.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 03584

What city is ZIP code 03584 in?

ZIP code 03584 is primarily assigned to Lancaster, New Hampshire.

What county is ZIP code 03584 in?

ZIP code 03584 falls within Coos County, New Hampshire.

Does ZIP code 03584 have a large retiree population?

46% of households in ZIP code 03584 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 03584?

The median home value in ZIP code 03584 is $184,600.

What is the population of ZIP code 03584?

ZIP code 03584 has an estimated population of 3,440 residents, with a density of 55 people per square mile.

What is the median household income in ZIP code 03584?

The median household income in ZIP code 03584 is $75,987, above the national median of ~$75,000.

What timezone is ZIP code 03584 in?

ZIP code 03584 observes the EST timezone.