PlainZIP

New London, NH · standard

ZIP Code 03257

Merrimack County, New Hampshire - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

4,455
75/sq mi
$107,000
Median income
$559,000
Median home value
64.7%
Bachelor's or higher

The verdict

New London pairs an upper-quartile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 15%
household income, US ZIPs
Top 11%
home value, US ZIPs
75
people per sq mi
91%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 03257 against every reporting US ZIP.

ZIP code 03257 covers 59.3 square miles in New London, Merrimack County, New Hampshire (a standard USPS delivery area), with a modest 4,455 residents on file, a density of 75 people per square mile, in the New York time zone.

ZIP 03257 lands in the middle-income range, with a median household income of $107,000 (5% above the New Hampshire average), while per-capita income is $53,645. Local economic indicators show a 0.9% poverty rate alongside 3.7% unemployment. Median home value sits at $559,000 (38% above the state average), median rent at $1,594 a month, and owner-occupancy at 90.6%.

This is a highly-educated ZIP: 64.7% of adults hold a bachelor's degree or higher, the median age is 50.9, and the average commute is 25 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 03257, plus 6 more within Merrimack County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 03257

Top 5 sectors by establishment count in New London, NH

Which industries have the most business establishments in ZIP 03257.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 03257, New London, NH · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

4,455

Population

59.3

Area (sq mi)

75

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 03257?

50.9

Median Age

48.2%

Male

51.8%

Female

6.3%

Foreign-Born

White 89.1%
African American 1.2%
Asian 3.3%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.4%
Hispanic or Latino 2.8%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$107,000

Median Household Income

+5% vs state

$53,645

Per Capita Income

0.9%

Poverty Rate

3.7%

Unemployment Rate

24.9 min

Mean Commute Time

How ZIP 03257 ranks nationally

New London, NH household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$107,000 Top 15% higher than 85% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 73.7%
Bachelor's Degree or Higher 64.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,409

Total Housing Units

1,650

Occupied Units

759

Vacant Units

2.20

Avg Household Size

Occupancy Type

Owner 90.6%
Renter 9.4%

$559,000

Median Home Value

+38% vs state

$1,594

Median Rent

1979

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+9.9%

YoY Change (2024)

250

HPI Index (2000 = 100)

+150%

Total Change Since 2000

Home values in ZIP 03257 have increased 9.9% over the past year (2024). Since 2000, this ZIP has seen +150% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.4% 156
2021 +14.5% 178
2022 +22.2% 218
2023 +4.5% 228
2024 +9.9% 250

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 177 business establishments in ZIP 03257, employing approximately 2,362 people with a combined annual payroll of $125,750,000.

177

Businesses

2,362

Employees

$125.8M

Annual Payroll

12

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 29 16.4%
Health care and social assistance 24 13.6%
Other services (except public administration) 19 10.7%
Accommodation and food services 18 10.2%
Construction 17 9.6%
Retail trade 15 8.5%
Finance and insurance 15 8.5%
Administrative and support and waste management and remediation services 13 7.3%
Real estate and rental and leasing 8 4.5%
Arts, entertainment, and recreation 7 4.0%
Wholesale trade 4 2.3%
Information 4 2.3%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 03257 vs 03233 →

ZIP 03257 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 03257 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 03257 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 03257 ranks #8 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
03233 Elkins, NH 115 2.9 mi
03287 Wilmot, NH 1,295 4.2 mi
03284 Springfield, NH 999 5.6 mi
03782 Sunapee, NH 2,945 5.4 mi
03751 Georges Mills, NH 583 5.4 mi
03260 North Sutton, NH 809 5.6 mi
03255 Newbury, NH 2,090 7.3 mi
03273 South Sutton, NH 312 8.7 mi
03754 Guild, NH 86 7.9 mi
03230 Danbury, NH 1,231 9.6 mi

More ZIP Codes in Merrimack County

03301 standard
Concord, NH
Pop: 33,008
03303 standard
Concord, NH
Pop: 15,524
03106 standard
Hooksett, NH
Pop: 13,374
03275 standard
Suncook, NH
Pop: 11,437
03235 standard
Franklin, NH
Pop: 8,562
03276 standard
Tilton, NH
Pop: 8,324

Related Areas

Merrimack County New London, NH New Hampshire

Frequently Asked Questions

What county is ZIP code 03257 in? ▼
ZIP code 03257 (New London) is located in Merrimack County, New Hampshire. Merrimack County contains multiple ZIP codes, see the full list at /counties/merrimack-nh.
What is the population of ZIP code 03257? ▼
ZIP code 03257 in New London, NH has a population of 4,455 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 03257? ▼
The median household income in ZIP 03257 is $107,000, which is 40% above the national average of $76,288.
What is the average home value in ZIP 03257? ▼
The median home value in ZIP 03257 is $559,000, which is 101% above the national average of $278,155.
What is the demographic makeup of ZIP 03257? ▼
The largest racial group in ZIP 03257 is White at 89.1%. Hispanic or Latino residents make up 2.8% of the population.
How many businesses are in ZIP code 03257? ▼
ZIP code 03257 has 177 business establishments employing approximately 2,362 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 03257? ▼
The top industries by establishment count in ZIP 03257 are: Professional, scientific, and technical services (29), Health care and social assistance (24), Other services (except public administration) (19). There are 12 industry sectors represented in total.
How have home values changed in ZIP code 03257? ▼
According to the FHFA House Price Index, home values in ZIP 03257 increased by 9.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 150%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 03257? ▼
In ZIP code 03257, 73.7% of residents aged 25+ have a high school diploma or higher, and 64.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 03257? ▼
The mean commute time for workers in ZIP code 03257 is 24.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 03257? ▼
In ZIP code 03257, approximately 90.6% of occupied housing units are owner-occupied and 9.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 03257? ▼
The poverty rate in ZIP code 03257 is 0.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.