PlainZIP

Rockport, ME · standard

ZIP Code 04856

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

3,330
59/sq mi
$86,979
Median income
$469,000
Median home value
51.3%
Bachelor's or higher

The verdict

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

Top 30%
household income, US ZIPs
Top 15%
home value, US ZIPs
59
people per sq mi
85%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 04856 against every reporting US ZIP.

ZIP code 04856 covers 56.1 square miles in Rockport, Knox County, Maine (a standard USPS delivery area), with a modest 3,330 residents on file, a density of 59 people per square mile, in the New York time zone.

ZIP 04856 lands in the middle-income range, with a median household income of $86,979 (18% above the Maine average), while per-capita income is $46,162. The poverty rate stands at 5.3% and the unemployment rate at 6.6%. On housing, the median home value is $469,000 (65% above the state average) with median rent at $1,194 per month, and 84.5% of occupied units are owner-occupied.

This is a highly-educated ZIP: 51.3% of adults hold a bachelor's degree or higher, the median age is 48.7, and the average commute is 11 minutes. A geography-based comparison follows: 8 ZIP codes within about 10 miles of 04856, 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 04856

Top 5 sectors by establishment count in Rockport, ME

Which industries have the most business establishments in ZIP 04856.

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 04856, Rockport, 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

3,330

Population

56.1

Area (sq mi)

59

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 04856?

48.7

Median Age

47.3%

Male

52.7%

Female

3.2%

Foreign-Born

White 94.2%
African American 0.3%
Asian 1.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.3%
Hispanic or Latino 0.2%

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?

$86,979

Median Household Income

+18% vs state

$46,162

Per Capita Income

5.3%

Poverty Rate

6.6%

Unemployment Rate

11.3 min

Mean Commute Time

How ZIP 04856 ranks nationally

Rockport, ME household income vs. every US ZIP code

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

$86,979 Top 30% higher than 70% 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%). This entry sits in this band. $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 69.9%
Bachelor's Degree or Higher 51.3%

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

What does housing look like?

2,018

Total Housing Units

1,498

Occupied Units

520

Vacant Units

2.37

Avg Household Size

Occupancy Type

Owner 84.5%
Renter 15.5%

$469,000

Median Home Value

+65% vs state

$1,194

Median Rent

1978

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

-4.2%

YoY Change (2024)

299

HPI Index (2000 = 100)

+199%

Total Change Since 2000

Home values in ZIP 04856 have decreased 4.2% over the past year (2024). Since 2000, this ZIP has seen +199% cumulative appreciation.

Year Annual Change HPI Index
2020 +6.8% 178
2021 +7.8% 192
2022 +31.6% 252
2023 +23.9% 312
2024 -4.2% 299

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 260 business establishments in ZIP 04856, employing approximately 3,084 people with a combined annual payroll of $204,890,000.

260

Businesses

3,084

Employees

$204.9M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Health care and social assistance 46 17.7%
Construction 34 13.1%
Professional, scientific, and technical services 29 11.2%
Retail trade 26 10.0%
Accommodation and food services 26 10.0%
Other services (except public administration) 25 9.6%
Manufacturing 15 5.8%
Real estate and rental and leasing 15 5.8%
Administrative and support and waste management and remediation services 13 5.0%
Arts, entertainment, and recreation 9 3.5%
Finance and insurance 8 3.1%
Educational services 5 1.9%
Information 3 1.1%

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 04856 vs 04841 →

ZIP 04856 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 04856 ranks #5 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 04856 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 04856 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
04841 Rockland, ME 7,297 3.6 mi
04843 Camden, ME 4,851 3.9 mi
04861 Thomaston, ME 2,781 6.5 mi
04847 Hope, ME 1,536 6.1 mi
04854 Owls Head, ME 1,580 7.8 mi
04858 South Thomaston, ME 1,533 9.2 mi
04864 Warren, ME 4,751 7.0 mi
04849 Lincolnville, ME 3,684 10.3 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
04862 standard
Union, ME
Pop: 3,592
04861 standard
Thomaston, ME
Pop: 2,781
04860 standard
Tenants Harbor, ME
Pop: 1,591

Related Areas

Knox County Rockport, ME Maine

Frequently Asked Questions

What county is ZIP code 04856 in? ▼
ZIP code 04856 (Rockport) 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 04856? ▼
ZIP code 04856 in Rockport, ME has a population of 3,330 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 04856? ▼
The median household income in ZIP 04856 is $86,979, which is 14% above the national average of $76,288.
What is the average home value in ZIP 04856? ▼
The median home value in ZIP 04856 is $469,000, which is 69% above the national average of $278,155.
What is the demographic makeup of ZIP 04856? ▼
The largest racial group in ZIP 04856 is White at 94.2%. Hispanic or Latino residents make up 0.2% of the population.
How many businesses are in ZIP code 04856? ▼
ZIP code 04856 has 260 business establishments employing approximately 3,084 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 04856? ▼
The top industries by establishment count in ZIP 04856 are: Health care and social assistance (46), Construction (34), Professional, scientific, and technical services (29). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 04856? ▼
According to the FHFA House Price Index, home values in ZIP 04856 decreased by 4.2% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 199%. 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 04856? ▼
In ZIP code 04856, 69.9% of residents aged 25+ have a high school diploma or higher, and 51.3% 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 04856? ▼
The mean commute time for workers in ZIP code 04856 is 11.3 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 04856? ▼
In ZIP code 04856, approximately 84.5% of occupied housing units are owner-occupied and 15.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 04856? ▼
The poverty rate in ZIP code 04856 is 5.3% 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.