PlainZIP

Union, ME · standard

ZIP Code 04862

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

3,592
21/sq mi
$73,536
Median income
$252,300
Median home value
34.3%
Bachelor's or higher

The verdict

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

Top 48%
household income, US ZIPs
Top 42%
home value, US ZIPs
21
people per sq mi
85%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 04862 against every reporting US ZIP.

ZIP code 04862 covers 168.6 square miles in Union, Knox County, Maine (a standard USPS delivery area), with a modest 3,592 residents on file, a density of 21 people per square mile, in the New York time zone.

ZIP 04862 lands in the middle-income range, with a median household income of $73,536 (0% above the Maine average), while per-capita income is $38,617. The poverty rate stands at 10.0% and the unemployment rate at 2.7%. The typical home here is valued at $252,300 (11% below the state average); renters pay a median of $1,125 monthly, and 84.6% of units are owner-occupied.

A solid share of residents have a four-year degree: 34.3% of adults hold a bachelor's degree or higher, the median age is 43.2, and the average commute is 30 minutes. To put 04862 in local context, 8 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Knox County, for a geography-aware comparison.

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 04862

Top 5 sectors by establishment count in Union, ME

Which industries have the most business establishments in ZIP 04862.

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 04862, Union, 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

3,592

Population

168.6

Area (sq mi)

21

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 04862?

43.2

Median Age

49.3%

Male

50.7%

Female

1.9%

Foreign-Born

White 94.4%
African American 0.1%
Asian 0.1%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.2%
Hispanic or Latino 0.4%

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?

$73,536

Median Household Income

+0% vs state

$38,617

Per Capita Income

10.0%

Poverty Rate

2.7%

Unemployment Rate

29.7 min

Mean Commute Time

How ZIP 04862 ranks nationally

Union, ME household income vs. every US ZIP code

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

$73,536 Top 48% higher than 52% 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 67.2%
Bachelor's Degree or Higher 34.3%

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

What does housing look like?

2,055

Total Housing Units

1,725

Occupied Units

330

Vacant Units

2.32

Avg Household Size

Occupancy Type

Owner 84.6%
Renter 15.4%

$252,300

Median Home Value

-11% vs state

$1,125

Median Rent

1982

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

+19.9%

YoY Change (2024)

334

HPI Index (2000 = 100)

+234%

Total Change Since 2000

Home values in ZIP 04862 have increased 19.9% over the past year (2024). Since 2000, this ZIP has seen +234% cumulative appreciation.

Year Annual Change HPI Index
2020 +8.8% 187
2021 +18.9% 222
2022 +21.6% 270
2023 +3.4% 279
2024 +19.9% 334

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 107 business establishments in ZIP 04862, employing approximately 561 people with a combined annual payroll of $22,985,000.

107

Businesses

561

Employees

$23.0M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Construction 18 16.8%
Retail trade 15 14.0%
Professional, scientific, and technical services 10 9.3%
Other services (except public administration) 10 9.3%
Administrative and support and waste management and remediation services 9 8.4%
Transportation and warehousing 8 7.5%
Arts, entertainment, and recreation 6 5.6%
Accommodation and food services 6 5.6%
Wholesale trade 5 4.7%
Manufacturing 4 3.7%
Finance and insurance 4 3.7%
Real estate and rental and leasing 4 3.7%
Health care and social assistance 4 3.7%

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 04862 vs 04847 →

ZIP 04862 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 04862 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 04862 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 04862 ranks #5 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
04847 Hope, ME 1,536 4.4 mi
04574 Washington, ME 1,510 5.7 mi
04864 Warren, ME 4,751 9.3 mi
04949 Liberty, ME 913 7.9 mi
04973 Searsmont, ME 1,389 8.1 mi
04841 Rockland, ME 7,297 11.6 mi
04952 Morrill, ME 1,829 12.2 mi
04354 Palermo, ME 1,535 11.9 mi

More ZIP Codes in Knox County

04841 standard
Rockland, ME
Pop: 7,297
04843 standard
Camden, ME
Pop: 4,851
04864 standard
Warren, ME
Pop: 4,751
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 Union, ME Maine

Frequently Asked Questions

What county is ZIP code 04862 in? ▼
ZIP code 04862 (Union) 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 04862? ▼
ZIP code 04862 in Union, ME has a population of 3,592 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 04862? ▼
The median household income in ZIP 04862 is $73,536, which is 4% below the national average of $76,288.
What is the average home value in ZIP 04862? ▼
The median home value in ZIP 04862 is $252,300, which is 9% below the national average of $278,155.
What is the demographic makeup of ZIP 04862? ▼
The largest racial group in ZIP 04862 is White at 94.4%. Hispanic or Latino residents make up 0.4% of the population.
How many businesses are in ZIP code 04862? ▼
ZIP code 04862 has 107 business establishments employing approximately 561 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 04862? ▼
The top industries by establishment count in ZIP 04862 are: Construction (18), Retail trade (15), Professional, scientific, and technical services (10). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 04862? ▼
According to the FHFA House Price Index, home values in ZIP 04862 increased by 19.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 234%. 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 04862? ▼
In ZIP code 04862, 67.2% of residents aged 25+ have a high school diploma or higher, and 34.3% 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 04862? ▼
The mean commute time for workers in ZIP code 04862 is 29.7 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 04862? ▼
In ZIP code 04862, approximately 84.6% of occupied housing units are owner-occupied and 15.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 04862? ▼
The poverty rate in ZIP code 04862 is 10.0% 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.