US ZIP Code
04858

South Thomaston, ME

Knox County  ·  Maine

● Active
👥 1,400 Population ↑ 15% since 2019
💰 $80,938 Median HH Income
≈ Avg ↑ 18% since 2019
🎂 48.7 Median Age ↓ 4% since 2019
🏠 $305,200 Median Home Value
▲ 9% above avg ↑ 32% since 2019
🎓 49.7% College Grads
▲ 28% above avg
📊 0.0% Unemployment
▼ 100% below avg ↓ 100% since 2019
ZIP Code Details
ZIP Code04858
CitySouth Thomaston
StateMaine (ME)
CountyKnox County
Area Code207
Elevation46 ft
Latitude44.046511
Longitude-69.154059
TimezoneNew York (DST)
FIPS23013
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 46.0% (644) Female 54.0% (756) ♀

Race & Ethnicity

White: 96.6%Hispanic: 0.6%Other: 2%Race
White96.6%
Hispanic0.6%
Other2.0%

Age Breakdown

Under 5
4%
5–17
13%
18–24
8%
25–44
17%
45–64
26%
65+
14%

Key Indicators

Median Age48.7 yrs ↓ 4% since 2019
Avg Household Size2.35
Below Poverty4.1% ▼ 59% below avg
College Grads49.7% ▲ 28% above avg
Unemployment0.0% ▼ 100% below avg
HS Graduate334 (32.9%)
Some College91 (9%)
Associates86 (8.5%)
Bachelors21 (2.1%)
Graduate Degree484 (47.6%)

Education

HS Grad: 32.9%Some College: 9%Associates: 8.5%Bachelors: 2.1%Graduate: 47.6%Edu
HS Grad32.9%
Some College9.0%
Associates8.5%
Bachelors2.1%
Graduate47.6%
Housing & Income

Housing Tenure

Owner: 90.4%Renter: 9.6%Tenure
Owner90.4%
Renter9.6%

Home Value Distribution

Under $50k
4%
$50k–100k
3%
$100k–150k
9%
$150k–200k
8%
$200k–300k
25%
$300k–500k
29%
Over $500k
21%

Financials

Median HH Income$80,938 ≈ Avg ↑ 18% since 2019
Median Home Value$305,200 ▲ 9% above avg ↑ 32% since 2019
Home/Income Ratio3.8x (nat avg ~3.5x)
Median Rent$1,063/mo ↑ 2% since 2019
Total Units865
Vacant Units269
Avg HH Size2.35

Income Distribution

Under $25k
12%
$25k–50k
13%
$50k–75k
22%
$75k–100k
19%
$100k–150k
16%
$150k–200k
9%
Over $200k
10%
Employment & Commute

How People Get to Work

Drove Alone
91%
Public Transit
1%
Walked
0%
Work From Home
8%

Commute Time

Under 15 min
30%
15–30 min
63%
30–45 min
6%
Over 45 min
2%
Housing Stock

Year Built

Before 1940
0%
1940s–1950s
4%
1960s–1970s
19%
1980s–1990s
18%
2000+
59%

Summary

Total Units865
Vacant269
Owner Occupied90.4%
Renter Occupied9.6%
Avg HH Size2.35
Frequently Asked Questions
ZIP code 04858 is in South Thomaston, ME, in Knox County.
ZIP code 04858 is located in Maine (ME).
ZIP code 04858 is in Knox County, ME.
ZIP 04858 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 04858 is 1,400 people (ACS 2023).
The median household income in ZIP code 04858 is $80,938 (ACS 2023).
The median home value in ZIP 04858 is $305,200 (ACS 2023).
About ZIP Code 04858

ZIP code 04858 is located in South Thomaston, Maine, within Knox County. With a population of 1,400, this is a sparsely populated ZIP code with a mature community — the median age is 48.7 years. Economically, 04858 is a middle-income ZIP code: the median household income of $80,938 is near the national average.

Real estate in ZIP code 04858 represents a mid-range housing market. The median home value of $305,200 is near the national average. Renters can expect to pay around $1,063 per month in median rent. Homeownership is strong here — 90.4% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 32% since 2019.

The population of 04858 is primarily White (96.64%). Residents are well-educated — 49.7% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 4.1%. Household income has grown by 18% since 2019.

As in most parts of the country, driving alone is the dominant commute mode at 83%.

Overall, ZIP code 04858 in South Thomaston, ME is characterized as middle-income, well-educated, a mature community, and predominantly owner-occupied. With 1,400 residents, a median household income of $80,938, and a median home value of $305,200, it offers a clear picture of life in this part of Maine.