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 Moderate-density area
- $107,000
- Median income Above-median income area
- $559,000
- Median home value Above-median home value
- 64.7%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 03257 (New London, NH) rose +9.9% from 2023 to 2024. The all-transactions index moved from 227.6 in 2023 to 250.2 in 2024 (2000 = 100).
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 average New Hampshire ZIP), while per-capita income is $53,645. Both reported hardship measures are comparatively low in absolute terms: poverty is 0.9% and unemployment is 3.7%. Housing is both higher-cost and owner-heavy: median home value is $559,000 (38% above the average New Hampshire ZIP), while 90.6% of occupied homes are owner-occupied and median rent is $1,594.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Merrimack County, so 03257 can be compared with both its immediate and county-level context.
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.
- Professional, scientific, and technical services
Professional, scientific, and technical services
29 establishments
- Health care and social assistance
Health care and social assistance
24 establishments
- Other services (except public administration)
Other services (except public administration)
19 establishments
- Accommodation and food services
Accommodation and food services
18 establishments
- Construction
Construction
17 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, 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
Who lives in ZIP 03257?
50.9
Median Age
48.2%
Male
51.8%
Female
6.3%
Foreign-Born
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 ZIP avg
$53,645
Per Capita Income
0.9%
Poverty Rate
3.7%
Unemployment Rate
24.9 min
Mean Commute Time
How ZIP 03257 ranks among New Hampshire ZIPs
New London, NH household income vs. every New Hampshire ZIP code
Median household income among 236 reporting New Hampshire ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$107,000 Top 39% higher than 61% of 236 New Hampshire ZIPs
Each bar is a $20K-wide band; taller bars hold more New Hampshire 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
2,409housing units
2,409
Total Housing Units
1,650
Occupied Units
759
Vacant Units
2.20
Avg Household Size
Occupancy Type
$559,000
Median Home Value
+38% vs state ZIP avg
$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.
- 03257
New London (03257)
4,455 residents
- 03782
Sunapee (03782)
2,945 residents
- 03255
Newbury (03255)
2,090 residents
- 03287 1,295
Wilmot (03287)
1,295 residents
- 03230 1,231
Danbury (03230)
1,231 residents
- 03284 999
Springfield (03284)
999 residents
- 03260 809
North Sutton (03260)
809 residents
- 03751 583
Georges Mills (03751)
583 residents
- 03273 312
South Sutton (03273)
312 residents
What this shows Among its immediate neighbors, ZIP 03257 ranks the most populous - useful context the national average alone can't give.
ZIP 03257 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 03273
South Sutton (03273)
$187,979 median income
- 03233
Elkins (03233)
$120,156 median income
- 03287
Wilmot (03287)
$117,759 median income
- 03255
Newbury (03255)
$117,045 median income
- 03260
North Sutton (03260)
$117,000 median income
- 03284
Springfield (03284)
$113,158 median income
- 03782
Sunapee (03782)
$110,175 median income
- 03257
New London (03257)
$107,000 median income
- 03230 $71,685
Danbury (03230)
$71,685 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 03257, both outside NH so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (4,455 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Merrimack County
Related Areas
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.
Related
Take this with you
What to do with ZIP 03257's numbers, next.
- See how ZIP 03257 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where New London, NH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.