20866 ZIP Code — Burtonsville, MD
Montgomery County, Maryland
ZIP code 20866 is located in Burtonsville, Maryland, within Montgomery County. It covers approximately 7.03 square miles and serves a population of 16,680 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301.
About ZIP code 20866
The housing stock consists of a mix of housing types. Most homes were built in the 1980s, giving the area an established character. Median home value is $419,600. Owner-occupancy is high at 80%, well above the national average.
Median household income is $137,990. The poverty rate of 5% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 36 minutes suggests many residents work outside the immediate area.
Educational attainment is near the national average, with 43% of residents holding a bachelor's degree or higher.
16,680
population
7.03
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
20866 ZIP code map
Cities in ZIP code 20866
Below are the cities the US Postal Service accepts for ZIP code 20866. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Burtonsville | Preferred |
Nearby ZIP codes
20707 Laurel (2.4 mi)
20868 Spencerville (2.6 mi)
20905 Silver Spring (3.7 mi)
20905 Silver Spring (3.7 mi)
20759 Fulton (3.9 mi)
20723 Laurel (3.9 mi)
20904 Silver Spring (4.2 mi)
20797 Southern Md Facility (4.5 mi)
20861 Ashton (4.6 mi)
20705 Beltsville (4.8 mi)
20697 Southern Md Facility (5.3 mi)
20777 Highland (5.5 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 16,680 |
| Population density | 2,373 / sq mi |
| State FIPS | 24 |
| County FIPS | 031 |
| Geography | |
|---|---|
| Land area | 7.03 sq mi |
| Water area | 0.34 sq mi |
| Latitude | 39.1064 |
| Longitude | -76.9252 |
| Timezone | Eastern (ET) |
| Area code | 301 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 15.8% | 20.6% | 28.2% |
| $50k – $100k | 26.6% | 24.2% | 28.2% |
| $100k – $200k | 42.4% | 31.9% | 30.1% |
| Over $200k | 15.3% | 23.3% | 13.4% |
Demographics & statistics
16,680
Population
2,373
People per sq mi
38.3
Median age
$137,990
Median household income
$46,012
Per capita income
$419,600
Median home value
$2,162
Median monthly rent
79.7%
Home ownership
5.0%
Poverty rate
6.0%
Unemployment
4,128
Housing units
42.9%
Bachelor's or higher
Age distribution
Male
Female
564
Under 5
534
519
5–9
491
718
10–14
680
498
15–19
472
511
20–24
485
1,057
25–34
1,001
1,435
35–44
1,360
1,134
45–54
1,074
480
55–59
455
576
60–64
545
806
65–74
764
221
75–84
210
46
85+
44
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 4,063 | 24.4% |
| 18 and over | 12,617 | 75.6% |
| 65 and over | 2,091 | 12.5% |
| Median age | 38.3 years | |
Race & ethnicity
Black or African American
41.9%
White
19.6%
Asian
16.8%
Hispanic or Latino
9%
Two or more races
6.5%
Other race
5.8%
American Indian / Alaska Native
0.4%
| Group | Count | % |
|---|---|---|
| Black or African American | 7,684 | 41.9% |
| White | 3,595 | 19.6% |
| Asian | 3,087 | 16.8% |
| Hispanic or Latino | 1,646 | 9% |
| Two or more races | 1,183 | 6.5% |
| Other race | 1,060 | 5.8% |
| American Indian / Alaska Native | 71 | 0.4% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 15.8% | 20.6% | 28.2% |
| $50k – $100k | 26.6% | 24.2% | 28.2% |
| $100k – $200k | 42.4% | 31.9% | 30.1% |
| Over $200k | 15.3% | 23.3% | 13.4% |
Under $10k
2.7%
$10k–$15k
0.7%
$15k–$25k
1.1%
$25k–$35k
1.7%
$35k–$50k
4.9%
$50k–$75k
9.6%
$75k–$100k
13.7%
$100k–$150k
23.2%
$150k–$200k
19.2%
$200k+
23.3%
| Range | % of households |
|---|---|
| Under $10k | 2.7% |
| $10k–$15k | 0.7% |
| $15k–$25k | 1.1% |
| $25k–$35k | 1.7% |
| $35k–$50k | 4.9% |
| $50k–$75k | 9.6% |
| $75k–$100k | 13.7% |
| $100k–$150k | 23.2% |
| $150k–$200k | 19.2% |
| $200k+ | 23.3% |
| Median income | $137,990 |
Housing
Home values
Under $50k
2.6%
$100k–$150k
0.5%
$150k–$200k
0.6%
$200k–$300k
8.2%
$300k–$500k
53.8%
$500k–$1M
32.8%
$1M+
1.5%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $419,600 |
| Median rent / month | $2,162 |
| Owner occupied | 79.7% |
| Renter occupied | 20.3% |
| Vacant | 1.7% |
| Single-family detached | 40.2% |
| Large apartment buildings | 0.6% |
| Mobile homes | 0.0% |
| Median rooms | 6.9 |
| Avg household size (owned) | 3.18 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 5.3% |
| 2000–2009 | 6.8% |
| 1990–1999 | 9.6% |
| 1980–1989 | 57.9% |
| 1970–1979 | 10.9% |
| 1960–1969 | 2.4% |
| 1950–1959 | 4.2% |
| 1940–1949 | 0.5% |
| 1939 or earlier | 2.3% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.4% |
| 1 bedroom | 1.1% |
| 2 bedrooms | 20.0% |
| 3 bedrooms | 40.3% |
| 4 bedrooms | 25.2% |
| 5+ bedrooms | 12.9% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 4.0% |
| 1 vehicle | 25.7% |
| 2 vehicles | 39.3% |
| 3 or more | 31.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 33.2% |
| Electricity | 60.6% |
| Propane / LP gas | 1.1% |
| Fuel oil | 3.8% |
| Wood | 0.3% |
| Solar | 1.0% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 3,025 | 59.7% |
| Cohabiting couple | 282 | 5.6% |
| Male householder, no spouse | 443 | 8.7% |
| Female householder, no spouse | 1,318 | 26.0% |
| Households with children under 18 | 2,222 | 43.8% |
| Households with seniors (65+) | 1,403 | 27.7% |
| Average household size | 3.26 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 36.3% | 30.5% |
| Married | 55.3% | 48.3% |
| Separated | 2.4% | 4.9% |
| Widowed | 0.7% | 4.2% |
| Divorced | 5.3% | 12.1% |
Education
Less than 9th grade
3.4%
Some HS, no diploma
4.7%
HS graduate
18.5%
Some college, no degree
19.9%
Associate's degree
10.5%
Bachelor's degree
22.8%
Graduate / professional
20.1%
| Metric | % |
|---|---|
| HS diploma or higher | 91.9% |
| Bachelor's or higher | 42.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 242 | 5.1% |
| Kindergarten | 188 | 4.0% |
| Elementary school | 1,974 | 41.7% |
| High school | 932 | 19.7% |
| College / grad school | 1,401 | 29.6% |
Employment
Industry of employment
Education & healthcare
22.9%
Professional & management
19.8%
Retail trade
11.9%
Other services
8.6%
Construction
8.2%
Arts, food & hospitality
7.8%
Public administration
7.6%
Finance & real estate
6.4%
Transportation & utilities
3.5%
Information
1.2%
Manufacturing
1.0%
Wholesale trade
0.7%
Agriculture & mining
0.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 49.6% |
| Service | 15.7% |
| Sales & office | 20.8% |
| Natural resources & construction | 6.7% |
| Production & transportation | 7.2% |
Employment type
| Type | % |
|---|---|
| Private sector | 77.2% |
| Government | 18.4% |
| Self-employed | 4.2% |
| Unpaid family workers | 0.2% |
Commute
| Method | % |
|---|---|
| Drive alone | 70.2% |
| Carpool | 9.5% |
| Public transit | 3.5% |
| Walk | 0.5% |
| Work from home | 15.1% |
| Other means | 1.1% |
| Avg commute (minutes) | 36.4 |
Poverty
All people
5.0%
Under 18 years
5.4%
18 and over
4.9%
Married-couple families
1.9%
Female-led households
5.8%
Income support
| Source | % of households |
|---|---|
| Social Security | 24.1% |
| Retirement income | 17.4% |
| Supplemental Security | 5.0% |
| Cash public assistance | 3.0% |
| Food stamps / SNAP | 8.8% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 24.0% |
| High blood pressure | 28.9% |
| High cholesterol | 30.6% |
| Diabetes | 8.6% |
| Heart disease | 3.9% |
| Stroke | 2.3% |
| Asthma | 8.9% |
| Arthritis | 17.1% |
| Kidney disease | 2.2% |
| Pulmonary disease | 3.7% |
| Cancer | 4.6% |
| Behavior / access | % |
|---|---|
| Smoking | 10.4% |
| Binge drinking | 11.8% |
| No physical activity | 18.1% |
| Less than 7 hrs sleep | 33.9% |
| Depression | 15.0% |
| Fair or poor health | 9.9% |
| Poor mental health | 12.2% |
| Poor physical health | 6.5% |
| No health insurance | 11.5% |
| Visited doctor (checkup) | 74.2% |
| Visited dentist | 66.4% |
| Cholesterol screening | 93.0% |
| Teeth loss | 7.1% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 436 | 3.5% |
| Disability | % |
|---|---|
| Any disability | 7.3% |
| Under 18 | 7.2% |
| 18–64 years | 5.1% |
| 65 and over | 19.2% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 74.2% |
| Public insurance | 28.0% |
| No insurance | 4.4% |
| Uninsured under 19 | 0.4% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 15,582 | 93.4% |
| Spanish | 1,882 | 12.1% |
| Other Indo-European | 672 | 4.3% |
| Asian & Pacific Islander | 307 | 2.0% |
| Other languages | 389 | 2.5% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 10,630 | 63.7% |
| Born in same state | 10,464 | 62.7% |
| Born in different state | 6,293 | 37.7% |
| Foreign born | 166 | 1.0% |
| Naturalized citizen | 6,050 | 36.3% |
| Not a US citizen | 4,333 | 71.6% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 476 | 2.9% |
| French | 355 | 2.1% |
| Arab | 333 | 2% |
| Norwegian | 86 | 0.5% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 25 | 0.1% |
| English | 22 | 0.1% |
| Dutch | 21 | 0.1% |
| Irish | 12 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 30.4% |
| Internet access | 98.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 20866
What city is ZIP code 20866 in?
ZIP code 20866 is primarily assigned to Burtonsville, Maryland.
What county is ZIP code 20866 in?
ZIP code 20866 falls within Montgomery County, Maryland.
What is the median household income in ZIP code 20866?
The median household income in ZIP code 20866 is $137,990, above the national median of ~$75,000.
What is the typical home value in ZIP code 20866?
The median home value in ZIP code 20866 is $419,600.
What is the population of ZIP code 20866?
ZIP code 20866 has an estimated population of 16,680 residents, with a density of 2,374 people per square mile.
What timezone is ZIP code 20866 in?
ZIP code 20866 observes the EST timezone.