PlainZIP

Warren, ME · standard

ZIP Code 04864

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

4,751
40/sq mi
$74,616
Median income
$232,700
Median home value
21.4%
Bachelor's or higher

The verdict

Warren pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 46%
household income, US ZIPs
Top 47%
home value, US ZIPs
40
people per sq mi
81%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 04864 against every reporting US ZIP.

ZIP code 04864 covers 120.3 square miles in Warren, Knox County, Maine (a standard USPS delivery area), with a modest 4,751 residents on file, a density of 40 people per square mile, in the New York time zone.

ZIP 04864 lands in the middle-income range, with a median household income of $74,616 (2% above the Maine average), while per-capita income is $37,647. The poverty rate stands at 6.0% and the unemployment rate at 0.6%. Median home value sits at $232,700 (18% below the state average), median rent at $1,125 a month, and owner-occupancy at 81.3%.

Educational attainment sits below the national norm: 21.4% of adults hold a bachelor's degree or higher, the median age is 42.2, and the average commute is 23 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 04864, plus 6 more within Knox 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 04864

Top 5 sectors by establishment count in Warren, ME

Which industries have the most business establishments in ZIP 04864.

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 04864, Warren, ME · 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

4,751

Population

120.3

Area (sq mi)

40

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 04864?

42.2

Median Age

66.4%

Male

33.6%

Female

2.7%

Foreign-Born

White 89.0%
African American 1.5%
Asian 1.1%
American Indian or Alaska Native 0.5%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.2%
Hispanic or Latino 2.6%

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?

$74,616

Median Household Income

+2% vs state

$37,647

Per Capita Income

6.0%

Poverty Rate

0.6%

Unemployment Rate

22.7 min

Mean Commute Time

How ZIP 04864 ranks nationally

Warren, ME household income vs. every US ZIP code

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

$74,616 Top 46% higher than 54% 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%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $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 67.1%
Bachelor's Degree or Higher 21.4%

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

What does housing look like?

1,887

Total Housing Units

1,645

Occupied Units

242

Vacant Units

2.29

Avg Household Size

Occupancy Type

Owner 81.3%
Renter 18.7%

$232,700

Median Home Value

-18% vs state

$1,125

Median Rent

1981

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

-1.9%

YoY Change (2024)

306

HPI Index (2000 = 100)

+206%

Total Change Since 2000

Home values in ZIP 04864 have decreased 1.9% over the past year (2024). Since 2000, this ZIP has seen +206% cumulative appreciation.

Year Annual Change HPI Index
2020 +10.3% 175
2021 +18.3% 206
2022 +24.0% 256
2023 +21.6% 311
2024 -1.9% 306

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 125 business establishments in ZIP 04864, employing approximately 750 people with a combined annual payroll of $38,613,000.

125

Businesses

750

Employees

$38.6M

Annual Payroll

10

Industry Sectors

Industry Establishments % of Total
Construction 30 24.0%
Health care and social assistance 18 14.4%
Retail trade 17 13.6%
Other services (except public administration) 15 12.0%
Manufacturing 13 10.4%
Administrative and support and waste management and remediation services 9 7.2%
Professional, scientific, and technical services 6 4.8%
Agriculture, forestry, fishing and hunting 3 2.4%
Finance and insurance 3 2.4%
Arts, entertainment, and recreation 3 2.4%

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 04864 vs 04861 →

ZIP 04864 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 04864 ranks #3 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 04864 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 04864 ranks #7 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
04861 Thomaston, ME 2,781 4.3 mi
04841 Rockland, ME 7,297 5.4 mi
04563 Cushing, ME 1,534 7.9 mi
04572 Waldoboro, ME 5,075 6.3 mi
04862 Union, ME 3,592 9.3 mi
04856 Rockport, ME 3,330 7.0 mi
04847 Hope, ME 1,536 8.8 mi
04858 South Thomaston, ME 1,533 7.6 mi
04547 Friendship, ME 1,152 10.2 mi
04859 Spruce Head, ME 724 11.1 mi

More ZIP Codes in Knox County

04841 standard
Rockland, ME
Pop: 7,297
04843 standard
Camden, ME
Pop: 4,851
04862 standard
Union, ME
Pop: 3,592
04856 standard
Rockport, ME
Pop: 3,330
04861 standard
Thomaston, ME
Pop: 2,781
04860 standard
Tenants Harbor, ME
Pop: 1,591

Related Areas

Knox County Warren, ME Maine

Frequently Asked Questions

What county is ZIP code 04864 in? ▼
ZIP code 04864 (Warren) is located in Knox County, Maine. Knox County contains multiple ZIP codes, see the full list at /counties/knox-me.
What is the population of ZIP code 04864? ▼
ZIP code 04864 in Warren, ME has a population of 4,751 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 04864? ▼
The median household income in ZIP 04864 is $74,616, which is 2% below the national average of $76,288.
What is the average home value in ZIP 04864? ▼
The median home value in ZIP 04864 is $232,700, which is 16% below the national average of $278,155.
What is the demographic makeup of ZIP 04864? ▼
The largest racial group in ZIP 04864 is White at 89.0%. Hispanic or Latino residents make up 2.6% of the population.
How many businesses are in ZIP code 04864? ▼
ZIP code 04864 has 125 business establishments employing approximately 750 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 04864? ▼
The top industries by establishment count in ZIP 04864 are: Construction (30), Health care and social assistance (18), Retail trade (17). There are 10 industry sectors represented in total.
How have home values changed in ZIP code 04864? ▼
According to the FHFA House Price Index, home values in ZIP 04864 decreased by 1.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 206%. 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 04864? ▼
In ZIP code 04864, 67.1% of residents aged 25+ have a high school diploma or higher, and 21.4% 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 04864? ▼
The mean commute time for workers in ZIP code 04864 is 22.7 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 04864? ▼
In ZIP code 04864, approximately 81.3% of occupied housing units are owner-occupied and 18.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 04864? ▼
The poverty rate in ZIP code 04864 is 6.0% 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.