Madbury, NH · standard
ZIP Code 03823
Strafford County, New Hampshire - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,719
- 63/sq mi Moderate-density area
- $148,365
- Median income Above-median income area
- $476,900
- Median home value Above-median home value
- 52.6%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Madbury pairs a top-decile household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 4%
- household income, US ZIPs
- Top 14%
- home value, US ZIPs
- 63
- people per sq mi
- 83%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 03823 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 03823 (Madbury, NH) rose +14.9% from 2023 to 2024. The all-transactions index moved from 249.2 in 2023 to 286.3 in 2024 (2000 = 100).
ZIP code 03823 covers 27.4 square miles in Madbury, Strafford County, New Hampshire (a standard USPS delivery area), with a modest 1,719 residents on file, a density of 63 people per square mile, in the New York time zone.
ZIP 03823 skews affluent, with a median household income of $148,365 (45% above the average New Hampshire ZIP), while per-capita income is $57,423. Both reported hardship measures are comparatively low in absolute terms: poverty is 4.9% and unemployment is 2.1%. Housing is both higher-cost and owner-heavy: median home value is $476,900 (18% above the average New Hampshire ZIP), while 82.9% of occupied homes are owner-occupied and median rent is $1,574.
This is a highly-educated ZIP: 52.6% of adults hold a bachelor's degree or higher, the median age is 37.7, and the average commute is 25 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Strafford County, so 03823 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 03823
Top 5 sectors by establishment count in Madbury, NH
Which industries have the most business establishments in ZIP 03823.
- Wholesale trade
Wholesale trade
4 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
4 establishments
- Health care and social assistance
Health care and social assistance
4 establishments
- Other services (except public administration)
Other services (except public administration)
4 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 03823, Madbury, 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
1,719
Population
27.4
Area (sq mi)
63
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 03823?
37.7
Median Age
46.8%
Male
53.2%
Female
6.4%
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?
$148,365
Median Household Income
+45% vs state ZIP avg
$57,423
Per Capita Income
4.9%
Poverty Rate
2.1%
Unemployment Rate
25.4 min
Mean Commute Time
How ZIP 03823 ranks among New Hampshire ZIPs
Madbury, 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)
$148,365 Top 10% higher than 90% 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
756housing units
756
Total Housing Units
735
Occupied Units
21
Vacant Units
2.98
Avg Household Size
Occupancy Type
$476,900
Median Home Value
+18% vs state ZIP avg
$1,574
Median Rent
1984
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
+14.9%
YoY Change (2024)
286
HPI Index (2000 = 100)
+186%
Total Change Since 2000
Home values in ZIP 03823 have increased 14.9% over the past year (2024). Since 2000, this ZIP has seen +186% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.2% | 179 |
| 2021 | +11.8% | 201 |
| 2022 | +18.2% | 237 |
| 2023 | +5.0% | 249 |
| 2024 | +14.9% | 286 |
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 25 business establishments in ZIP 03823, employing approximately 217 people with a combined annual payroll of $10,977,000.
25
Businesses
217
Employees
$11.0M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Wholesale trade | 4 | 16.0% |
| Professional, scientific, and technical services | 4 | 16.0% |
| Health care and social assistance | 4 | 16.0% |
| Other services (except public administration) | 4 | 16.0% |
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 03823 vs 03820 →
ZIP 03823 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 03820
Dover (03820)
30,039 residents
- 03824
Durham (03824)
14,638 residents
- 03878 11,824
Somersworth (03878)
11,824 residents
- 03857 9,006
Newmarket (03857)
9,006 residents
- 03825 8,512
Barrington (03825)
8,512 residents
- 03868 5,323
Rochester (03868)
5,323 residents
- 03861 4,330
Lee (03861)
4,330 residents
- 03839 3,735
Rochester (03839)
3,735 residents
- 03869 2,469
Rollinsford (03869)
2,469 residents
What this shows Among its immediate neighbors, ZIP 03823 ranks #0 by population - useful context the national average alone can't give.
ZIP 03823 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 03856
Newfields (03856)
$197,885 median income
- 03823
Madbury (03823)
$148,365 median income
- 03861
Lee (03861)
$131,579 median income
- 03824
Durham (03824)
$124,056 median income
- 03825
Barrington (03825)
$110,323 median income
- 03857
Newmarket (03857)
$100,845 median income
- 03820
Dover (03820)
$94,897 median income
- 03839
Rochester (03839)
$88,346 median income
- 03869
Rollinsford (03869)
$87,215 median income
What this shows By household income, ZIP 03823 ranks #2 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 03820 | Dover, NH | 30,039 | 2.9 mi |
| 03824 | Durham, NH | 14,638 | 4.0 mi |
| 03857 | Newmarket, NH | 9,006 | 7.2 mi |
| 03861 | Lee, NH | 4,330 | 5.0 mi |
| 03839 | Rochester, NH | 3,735 | 6.5 mi |
| 03878 | Somersworth, NH | 11,824 | 6.2 mi |
| 03825 | Barrington, NH | 8,512 | 5.9 mi |
| 03869 | Rollinsford, NH | 2,469 | 6.0 mi |
| 03868 | Rochester, NH | 5,323 | 10.2 mi |
| 03856 | Newfields, NH | 1,680 | 9.3 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 03823, 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 (1,719 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Strafford County
Related Areas
Frequently Asked Questions
What county is ZIP code 03823 in?
ZIP code 03823 (Madbury) is located in Strafford County, New Hampshire. Strafford County contains multiple ZIP codes, see the full list at /counties/strafford-nh.
What is the population of ZIP code 03823?
ZIP code 03823 in Madbury, NH has a population of 1,719 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 03823?
The median household income in ZIP 03823 is $148,365, which is 94% above the national average of $76,288.
What is the average home value in ZIP 03823?
The median home value in ZIP 03823 is $476,900, which is 71% above the national average of $278,155.
What is the demographic makeup of ZIP 03823?
The largest racial group in ZIP 03823 is White at 81.4%. Hispanic or Latino residents make up 1.9% of the population.
How many businesses are in ZIP code 03823?
ZIP code 03823 has 25 business establishments employing approximately 217 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 03823?
The top industries by establishment count in ZIP 03823 are: Wholesale trade (4), Professional, scientific, and technical services (4), Health care and social assistance (4). There are 4 industry sectors represented in total.
How have home values changed in ZIP code 03823?
According to the FHFA House Price Index, home values in ZIP 03823 increased by 14.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 186%. 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 03823?
In ZIP code 03823, 71.3% of residents aged 25+ have a high school diploma or higher, and 52.6% 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 03823?
The mean commute time for workers in ZIP code 03823 is 25.4 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 03823?
In ZIP code 03823, approximately 82.9% of occupied housing units are owner-occupied and 17.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 03823?
The poverty rate in ZIP code 03823 is 4.9% 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 03823's numbers, next.
- See how ZIP 03823 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Madbury, NH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.