ZIP Code 04259
standardSource:
Monmouth · Kennebec County · Maine
- Population
- 3,264
- Median income
- $83,919
- Median home value
- $298,300
- Bachelor's or higher
- 34.6%
- Land area
- 76.1 sq mi
43/sq mi
▲ 10% vs US
higher than 67% of US ZIPs
▲ 7% vs US
higher than 66% of US ZIPs
Median age 46
New York
ZIP code 04259 in Monmouth, Maine has a population of 3,264. The median household income is $83,919, which is 10% above the national average. Median home value is $298,300, 7% above the US average. 34.6% of residents hold a bachelor's degree or higher.
ZIP code 04259 is classified by USPS as a standard delivery area and covers roughly 76.1 square miles in Monmouth, Kennebec County, Maine. The area is home to 3,264 residents, producing a population density of 43 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 04259 against Maine and the nation.
On the economic side, the median household income for ZIP 04259 sits at $83,919 (14% above the Maine average), while per-capita income is $40,324. The poverty rate stands at 8.1% and the unemployment rate at 0.1%. On housing, the median home value is $298,300 (5% above the state average) with median rent at $1,249 per month, and 78.0% of occupied units are owner-occupied, a direct signal of whether 04259 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 34.6% of adults hold a bachelor's degree or higher, the median age is 46, and the average commute is 29 minutes. We also surface 9 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Kennebec County, so you can benchmark 04259 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 04259
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 04259.
- Construction
Construction
18 establishments
- Retail trade
Retail trade
11 establishments
- Professional, scientific, and technical services 7
Professional, scientific, and technical services
7 establishments
- Other services (except public administration) 6
Other services (except public administration)
6 establishments
- Manufacturing 3
Manufacturing
3 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, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 04259, Monmouth, ME · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
3,264
Population
76.1
Area (sq mi)
43
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 04259?
46.0
Median Age
54.4%
Male
45.6%
Female
1.7%
Foreign-Born
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?
$83,919
Median Household Income
+14% vs state
$40,324
Per Capita Income
8.1%
Poverty Rate
0.1%
Unemployment Rate
28.7 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
1,890
Total Housing Units
1,492
Occupied Units
398
Vacant Units
2.40
Avg Household Size
Occupancy Type
$298,300
Median Home Value
+5% vs state
$1,249
Median Rent
1986
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
+29.0%
YoY Change (2024)
338
HPI Index (2000 = 100)
+238%
Total Change Since 2000
Home values in ZIP 04259 have increased 29.0% over the past year (2024). Since 2000, this ZIP has seen +238% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +8.6% | 185 |
| 2021 | +20.5% | 223 |
| 2022 | +11.9% | 250 |
| 2023 | +4.8% | 262 |
| 2024 | +29.0% | 338 |
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 63 business establishments in ZIP 04259, employing approximately 279 people with a combined annual payroll of $16,179,000.
63
Businesses
279
Employees
$16.2M
Annual Payroll
8
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 18 | 28.6% |
| Retail trade | 11 | 17.5% |
| Professional, scientific, and technical services | 7 | 11.1% |
| Other services (except public administration) | 6 | 9.5% |
| Manufacturing | 3 | 4.8% |
| Administrative and support and waste management and remediation services | 3 | 4.8% |
| Health care and social assistance | 3 | 4.8% |
| Accommodation and food services | 3 | 4.8% |
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 04259 vs 04265 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 04265 | North Monmouth, ME | 918 | 4.3 mi |
| 04364 | Winthrop, ME | 6,025 | 6.2 mi |
| 04350 | Litchfield, ME | 3,577 | 5.7 mi |
| 04280 | Sabattus, ME | 6,474 | 7.8 mi |
| 04236 | Greene, ME | 4,350 | 7.2 mi |
| 04284 | Wayne, ME | 1,138 | 9.0 mi |
| 04263 | Leeds, ME | 2,326 | 7.6 mi |
| 04343 | East Winthrop, ME | 25 | 9.0 mi |
| 04351 | Manchester, ME | 2,571 | 10.2 mi |
More ZIP Codes in Kennebec County
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Frequently Asked Questions
What county is ZIP code 04259 in? ▼
What is the population of ZIP code 04259? ▼
What is the median household income in ZIP 04259? ▼
What is the average home value in ZIP 04259? ▼
What is the demographic makeup of ZIP 04259? ▼
How many businesses are in ZIP code 04259? ▼
What are the main industries in ZIP code 04259? ▼
How have home values changed in ZIP code 04259? ▼
What is the education level in ZIP code 04259? ▼
What is the average commute time in ZIP 04259? ▼
What percentage of residents own vs. rent in ZIP 04259? ▼
What is the poverty rate in ZIP code 04259? ▼
ZIP Code Research Guides
Official Data Resources for Monmouth, ME
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.