PlainZIP

Dennis, MA · standard

ZIP Code 02638

Barnstable County, Massachusetts - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,207
209/sq mi
$108,726
Median income
$827,900
Median home value
45.9%
Bachelor's or higher

The verdict

Dennis pairs an upper-quartile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 14%
household income, US ZIPs
Top 4%
home value, US ZIPs
209
people per sq mi
87%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 02638 against every reporting US ZIP.

ZIP code 02638 covers 15.4 square miles in Dennis, Barnstable County, Massachusetts (a standard USPS delivery area), with a modest 3,207 residents on file, a density of 209 people per square mile, in the New York time zone.

ZIP 02638 lands in the middle-income range, with a median household income of $108,726 (6% below the Massachusetts average), while per-capita income is $63,789. Local economic indicators show a 3.3% poverty rate alongside 1.9% unemployment. The typical home here is valued at $827,900 (38% above the state average); renters pay a median of $1,208 monthly, and 87.1% of units are owner-occupied.

A solid share of residents have a four-year degree: 45.9% of adults hold a bachelor's degree or higher, the median age is 60.5, and the average commute is -. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 02638, plus 6 more within Barnstable 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 02638

Top 5 sectors by establishment count in Dennis, MA

Which industries have the most business establishments in ZIP 02638.

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 02638, Dennis, MA · 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

3,207

Population

15.4

Area (sq mi)

209

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 02638?

60.5

Median Age

42.7%

Male

57.3%

Female

6.7%

Foreign-Born

White 93.0%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.6%
Hispanic or Latino 6.3%

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?

$108,726

Median Household Income

-6% vs state

$63,789

Per Capita Income

3.3%

Poverty Rate

1.9%

Unemployment Rate

How ZIP 02638 ranks nationally

Dennis, MA household income vs. every US ZIP code

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

$108,726 Top 14% higher than 86% 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 73.5%
Bachelor's Degree or Higher 45.9%

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

What does housing look like?

2,932

Total Housing Units

1,440

Occupied Units

1,492

Vacant Units

2.26

Avg Household Size

Occupancy Type

Owner 87.1%
Renter 12.9%

$827,900

Median Home Value

+38% vs state

$1,208

Median Rent

1976

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

+8.6%

YoY Change (2024)

351

HPI Index (2000 = 100)

+251%

Total Change Since 2000

Home values in ZIP 02638 have increased 8.6% over the past year (2024). Since 2000, this ZIP has seen +251% cumulative appreciation.

Year Annual Change HPI Index
2020 +5.1% 218
2021 +15.5% 252
2022 +20.5% 303
2023 +6.5% 323
2024 +8.6% 351

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 91 business establishments in ZIP 02638, employing approximately 437 people with a combined annual payroll of $27,632,000.

91

Businesses

437

Employees

$27.6M

Annual Payroll

11

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 16 17.6%
Retail trade 14 15.4%
Construction 12 13.2%
Professional, scientific, and technical services 10 11.0%
Health care and social assistance 8 8.8%
Other services (except public administration) 7 7.7%
Real estate and rental and leasing 5 5.5%
Administrative and support and waste management and remediation services 5 5.5%
Arts, entertainment, and recreation 4 4.4%
Wholesale trade 3 3.3%
Finance and insurance 3 3.3%

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 02638 vs 02664 →

ZIP 02638 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 02638 ranks #6 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 02638 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 02638 ranks #3 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
02664 South Yarmouth, MA 9,371 4.0 mi
02641 East Dennis, MA 532 2.5 mi
02675 Yarmouth Port, MA 6,577 2.7 mi
02660 South Dennis, MA 6,261 2.7 mi
02670 West Dennis, MA 1,307 5.1 mi
02637 Cummaquid, MA 253 4.5 mi
02639 Dennis Port, MA 2,875 5.5 mi
02673 West Yarmouth, MA 8,402 5.9 mi
02630 Barnstable, MA 1,850 6.0 mi
02631 Brewster, MA 9,679 6.5 mi

More ZIP Codes in Barnstable County

02536 standard
East Falmouth, MA
Pop: 19,583
02601 standard
Hyannis, MA
Pop: 14,089
02649 standard
Mashpee, MA
Pop: 14,006
02532 standard
Buzzards Bay, MA
Pop: 12,690
02632 standard
Centerville, MA
Pop: 10,742
02563 standard
Sandwich, MA
Pop: 10,359

Related Areas

Barnstable County Dennis, MA Massachusetts

Frequently Asked Questions

What county is ZIP code 02638 in? ▼
ZIP code 02638 (Dennis) is located in Barnstable County, Massachusetts. Barnstable County contains multiple ZIP codes, see the full list at /counties/barnstable-ma.
What is the population of ZIP code 02638? ▼
ZIP code 02638 in Dennis, MA has a population of 3,207 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 02638? ▼
The median household income in ZIP 02638 is $108,726, which is 43% above the national average of $76,288.
What is the average home value in ZIP 02638? ▼
The median home value in ZIP 02638 is $827,900, which is 198% above the national average of $278,155.
What is the demographic makeup of ZIP 02638? ▼
The largest racial group in ZIP 02638 is White at 93.0%. Hispanic or Latino residents make up 6.3% of the population.
How many businesses are in ZIP code 02638? ▼
ZIP code 02638 has 91 business establishments employing approximately 437 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 02638? ▼
The top industries by establishment count in ZIP 02638 are: Accommodation and food services (16), Retail trade (14), Construction (12). There are 11 industry sectors represented in total.
How have home values changed in ZIP code 02638? ▼
According to the FHFA House Price Index, home values in ZIP 02638 increased by 8.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 251%. 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 02638? ▼
In ZIP code 02638, 73.5% of residents aged 25+ have a high school diploma or higher, and 45.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 02638? ▼
In ZIP code 02638, approximately 87.1% of occupied housing units are owner-occupied and 12.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 02638? ▼
The poverty rate in ZIP code 02638 is 3.3% 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.