03242 ZIP Code — Henniker, NH
Merrimack County, New Hampshire
ZIP code 03242 is located in Henniker, New Hampshire, within Merrimack County. It covers approximately 44.12 square miles and serves a population of 6,094 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.
About ZIP code 03242
The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $272,600. Owner-occupancy sits near the national average at 65%.
Median household income is $76,681. 35% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.
Educational attainment is near the national average, with 36% of residents holding a bachelor's degree or higher.
6,094
population
44.12
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
03242 ZIP code map
Cities in ZIP code 03242
Below are the cities the US Postal Service accepts for ZIP code 03242. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Henniker | Preferred |
Nearby ZIP codes
03244 Hillsborough (6.5 mi)
03229 Contoocook (6.9 mi)
03281 Weare (7.7 mi)
03221 Bradford (8.4 mi)
03278 Warner (9.8 mi)
03440 Antrim (11.1 mi)
03303 Concord (11.6 mi)
03043 Francestown (12 mi)
03280 Washington (13.8 mi)
03255 Newbury (14.1 mi)
03301 Concord (14.4 mi)
03305 Concord (14.5 mi)
Demographics
updated 07/2026
| Population | |
|---|---|
| Total population | 6,094 |
| Population density | 138 / sq mi |
| State FIPS | 33 |
| County FIPS | 013 |
| Geography | |
|---|---|
| Land area | 44.12 sq mi |
| Water area | 0.68 sq mi |
| Latitude | 43.1692 |
| Longitude | -71.8212 |
| Timezone | Eastern (ET) |
| Area code | 603 |
Total population by age
Gender
Race & ethnicity
Economics
updated 07/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 35.9% | 30.8% | 31.0% |
| $50k – $100k | 22.6% | 32.4% | 31.2% |
| $100k – $200k | 32.9% | 28.6% | 28.1% |
| Over $200k | 8.5% | 8.1% | 9.7% |
Demographics & statistics
6,094
Population
138
People per sq mi
34.0
Median age
$76,681
Median household income
$38,098
Per capita income
$272,600
Median home value
$916
Median monthly rent
64.5%
Home ownership
10.1%
Poverty rate
2.1%
Unemployment
1,708
Housing units
35.6%
Bachelor's or higher
Age distribution
Male
Female
169
Under 5
147
180
5–9
156
125
10–14
108
293
15–19
254
500
20–24
435
364
25–34
317
321
35–44
279
255
45–54
222
260
55–59
227
148
60–64
128
542
65–74
471
103
75–84
90
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 1,012 | 16.6% |
| 18 and over | 5,082 | 83.4% |
| 65 and over | 1,206 | 19.8% |
| Median age | 34.0 years | |
Race & ethnicity
White
95.1%
Two or more races
2.6%
Hispanic or Latino
1.2%
Black or African American
0.6%
Other race
0.3%
Asian
0.3%
| Group | Count | % |
|---|---|---|
| White | 5,860 | 95.1% |
| Two or more races | 160 | 2.6% |
| Hispanic or Latino | 71 | 1.2% |
| Black or African American | 35 | 0.6% |
| Other race | 21 | 0.3% |
| Asian | 18 | 0.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 35.9% | 30.8% | 31.0% |
| $50k – $100k | 22.6% | 32.4% | 31.2% |
| $100k – $200k | 32.9% | 28.6% | 28.1% |
| Over $200k | 8.5% | 8.1% | 9.7% |
Under $10k
1.6%
$10k–$15k
7.1%
$15k–$25k
9.1%
$25k–$35k
9.8%
$35k–$50k
6.5%
$50k–$75k
15.0%
$75k–$100k
9.9%
$100k–$150k
24.7%
$150k–$200k
6.3%
$200k+
10.0%
| Range | % of households |
|---|---|
| Under $10k | 1.6% |
| $10k–$15k | 7.1% |
| $15k–$25k | 9.1% |
| $25k–$35k | 9.8% |
| $35k–$50k | 6.5% |
| $50k–$75k | 15.0% |
| $75k–$100k | 9.9% |
| $100k–$150k | 24.7% |
| $150k–$200k | 6.3% |
| $200k+ | 10.0% |
| Median income | $76,681 |
Housing
Home values
Under $50k
1.6%
$50k–$100k
1.5%
$100k–$150k
5.2%
$150k–$200k
2.0%
$200k–$300k
53.0%
$300k–$500k
25.8%
$500k–$1M
10.9%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $272,600 |
| Median rent / month | $916 |
| Owner occupied | 64.5% |
| Renter occupied | 35.5% |
| Vacant | 6.4% |
| Single-family detached | 57.5% |
| Large apartment buildings | 0.4% |
| Mobile homes | 4.0% |
| Median rooms | 5.5 |
| Avg household size (owned) | 2.68 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 2.0% |
| 2000–2009 | 6.4% |
| 1990–1999 | 6.3% |
| 1980–1989 | 20.4% |
| 1970–1979 | 27.0% |
| 1960–1969 | 4.3% |
| 1950–1959 | 3.6% |
| 1940–1949 | 8.7% |
| 1939 or earlier | 21.4% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 10.0% |
| 1 bedroom | 15.5% |
| 2 bedrooms | 24.7% |
| 3 bedrooms | 36.6% |
| 4 bedrooms | 12.3% |
| 5+ bedrooms | 0.9% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.9% |
| 1 vehicle | 30.3% |
| 2 vehicles | 42.8% |
| 3 or more | 24.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 10.6% |
| Electricity | 14.6% |
| Propane / LP gas | 22.8% |
| Fuel oil | 30.0% |
| Wood | 20.4% |
| No fuel used | 1.6% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 1,064 | 44.4% |
| Cohabiting couple | 235 | 9.8% |
| Male householder, no spouse | 596 | 24.9% |
| Female householder, no spouse | 502 | 20.9% |
| Households with children under 18 | 572 | 23.9% |
| Households with seniors (65+) | 812 | 33.9% |
| Average household size | 2.29 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 48.7% | 35.2% |
| Married | 42.5% | 43.5% |
| Separated | 1.1% | 1.8% |
| Widowed | 0.3% | 1.8% |
| Divorced | 7.4% | 17.6% |
Education
Less than 9th grade
0.7%
Some HS, no diploma
1.7%
HS graduate
26.6%
Some college, no degree
15.7%
Associate's degree
19.6%
Bachelor's degree
21.7%
Graduate / professional
13.9%
| Metric | % |
|---|---|
| HS diploma or higher | 97.6% |
| Bachelor's or higher | 35.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 15 | 0.9% |
| Kindergarten | 51 | 3.0% |
| Elementary school | 463 | 27.5% |
| High school | 128 | 7.6% |
| College / grad school | 1,024 | 60.9% |
Employment
Industry of employment
Education & healthcare
19.4%
Professional & management
16.0%
Other services
14.0%
Arts, food & hospitality
13.2%
Retail trade
8.6%
Construction
6.4%
Manufacturing
6.4%
Public administration
6.0%
Wholesale trade
4.0%
Finance & real estate
4.0%
Transportation & utilities
1.1%
Agriculture & mining
0.9%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 40.9% |
| Service | 17.7% |
| Sales & office | 17.3% |
| Natural resources & construction | 16.4% |
| Production & transportation | 7.7% |
Employment type
| Type | % |
|---|---|
| Private sector | 78.5% |
| Government | 14.2% |
| Self-employed | 5.9% |
| Unpaid family workers | 1.4% |
Commute
| Method | % |
|---|---|
| Drive alone | 71.5% |
| Carpool | 8.1% |
| Public transit | 0.0% |
| Walk | 3.7% |
| Work from home | 16.4% |
| Other means | 0.2% |
| Avg commute (minutes) | 23.3 |
Poverty
All people
10.1%
Under 18 years
13.7%
18 and over
9.3%
Married-couple families
0.0%
Female-led households
30.7%
Income support
| Source | % of households |
|---|---|
| Social Security | 35.0% |
| Retirement income | 24.9% |
| Supplemental Security | 6.5% |
| Cash public assistance | 0.7% |
| Food stamps / SNAP | 6.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 27.5% |
| High blood pressure | 25.1% |
| High cholesterol | 24.9% |
| Diabetes | 6.6% |
| Heart disease | 4.4% |
| Stroke | 2.1% |
| Asthma | 11.3% |
| Arthritis | 22.0% |
| Kidney disease | 2.1% |
| Pulmonary disease | 5.0% |
| Cancer | 5.4% |
| Behavior / access | % |
|---|---|
| Smoking | 13.6% |
| Binge drinking | 19.9% |
| No physical activity | 15.3% |
| Less than 7 hrs sleep | 31.2% |
| Depression | 25.2% |
| Fair or poor health | 9.9% |
| Poor mental health | 15.6% |
| Poor physical health | 8.4% |
| No health insurance | 9.6% |
| Visited doctor (checkup) | 72.4% |
| Visited dentist | 70.7% |
| Cholesterol screening | 88.2% |
| Teeth loss | 10.4% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 288 | 5.7% |
| Disability | % |
|---|---|
| Any disability | 12.9% |
| Under 18 | 7.7% |
| 18–64 years | 11.3% |
| 65 and over | 22.5% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 80.1% |
| Public insurance | 31.0% |
| No insurance | 6.4% |
| Uninsured under 19 | 0.8% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 5,778 | 94.8% |
| Spanish | 88 | 1.5% |
| Other Indo-European | 21 | 0.4% |
| Asian & Pacific Islander | 62 | 1.1% |
| Other languages | 5 | 0.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 6,020 | 98.8% |
| Born in same state | 6,020 | 98.8% |
| Born in different state | 3,212 | 52.7% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 74 | 1.2% |
| Not a US citizen | 43 | 58.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 1,715 | 28.1% |
| French | 1,451 | 23.8% |
| Arab | 482 | 7.9% |
| Ancestry | Count | % |
|---|---|---|
| German | 273 | 4.5% |
| Polish | 39 | 0.6% |
| English | 29 | 0.5% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 39.3% |
| Internet access | 92.9% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 03242
What city is ZIP code 03242 in?
ZIP code 03242 is primarily assigned to Henniker, New Hampshire.
What county is ZIP code 03242 in?
ZIP code 03242 falls within Merrimack County, New Hampshire.
What is the population of ZIP code 03242?
ZIP code 03242 has an estimated population of 6,094 residents, with a density of 138 people per square mile.
What is the typical home value in ZIP code 03242?
The median home value in ZIP code 03242 is $272,600.
What is the median household income in ZIP code 03242?
The median household income in ZIP code 03242 is $76,681, above the national median of ~$75,000.
What timezone is ZIP code 03242 in?
ZIP code 03242 observes the EST timezone.