PlainZIP

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
$148,365
Median income
$476,900
Median home value
52.6%
Bachelor's or higher

The verdict

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.

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 New Hampshire average), while per-capita income is $57,423. Poverty here runs at 4.9%, with unemployment measured at 2.1%. Housing costs here run $476,900 for a typical home value (18% above the state average), with rent averaging $1,574 a month; 82.9% of homes are owner-occupied.

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. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Strafford County, so you can benchmark 03823 against its immediate geography rather than a 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 03823

Top 5 sectors by establishment count in Madbury, NH

Which industries have the most business establishments in ZIP 03823.

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 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

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 03823?

37.7

Median Age

46.8%

Male

53.2%

Female

6.4%

Foreign-Born

White 81.4%
African American 2.2%
Asian 2.5%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 10.3%
Hispanic or Latino 1.9%

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

$57,423

Per Capita Income

4.9%

Poverty Rate

2.1%

Unemployment Rate

25.4 min

Mean Commute Time

How ZIP 03823 ranks nationally

Madbury, NH household income vs. every US ZIP code

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

$148,365 Top 4% higher than 96% 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%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $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 71.3%
Bachelor's Degree or Higher 52.6%

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

What does housing look like?

756

Total Housing Units

735

Occupied Units

21

Vacant Units

2.98

Avg Household Size

Occupancy Type

Owner 82.9%
Renter 17.1%

$476,900

Median Home Value

+18% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 03823 ranks #0 by population - useful context the national average alone can't give.

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

ZIP 03823 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 03823 ranks #2 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
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

More ZIP Codes in Strafford County

03820 standard
Dover, NH
Pop: 30,039
03867 standard
Rochester, NH
Pop: 20,758
03824 standard
Durham, NH
Pop: 14,638
03878 standard
Somersworth, NH
Pop: 11,824
03825 standard
Barrington, NH
Pop: 8,512
03835 standard
Farmington, NH
Pop: 6,786

Related Areas

Strafford County Madbury, NH New Hampshire

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.

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