PlainZIP

Gaithersburg, MD · standard

ZIP Code 20899

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

142
694/sq mi
$24,417
Median income
0.0%
Bachelor's or higher

The verdict

Gaithersburg pairs one of the lowest household incomes in the country, in a low-density, renter-heavy area.

1th pct
household income, US ZIPs
694
people per sq mi
0%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20899 against every reporting US ZIP.

ZIP code 20899 is a sparsely populated ZIP (a standard USPS delivery area) in Gaithersburg, Montgomery County, Maryland, home to just 142 residents across 0.2 square miles, a density of 694 people per square mile, in the New York time zone.

ZIP 20899 sits on the lower end of the income spectrum: median household income is $24,417 (79% below the Maryland average), while per-capita income is $27,240. Poverty here runs at 0.0%, with unemployment measured at 53.1%. Median home value sits at -, median rent at $788 a month, and owner-occupancy at 0.0%.

Formal educational attainment runs low here: just 0.0% of adults hold a bachelor's degree or higher, the median age is 62.8, and the average commute is -. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Montgomery County, letting you compare 20899 to its immediate surroundings rather than a national baseline 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 →

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 20899, Gaithersburg, MD · 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

142

Population

0.2

Area (sq mi)

694

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 20899?

62.8

Median Age

56.1%

Male

43.9%

Female

26.3%

Foreign-Born

White 0.0%
African American 100.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 0.0%

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?

$24,417

Median Household Income

-79% vs state

$27,240

Per Capita Income

0.0%

Poverty Rate

53.1%

Unemployment Rate

How ZIP 20899 ranks nationally

Gaithersburg, MD household income vs. every US ZIP code

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

$24,417 1st percentile higher than 1% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). This entry sits in this band. $40,000–$60,000: 7,092 US ZIPs (23%). Above this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $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 43.9%
Bachelor's Degree or Higher 0.0%

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

What does housing look like?

93

Total Housing Units

57

Occupied Units

36

Vacant Units

Occupancy Type

Owner 0.0%
Renter 100.0%

$788

Median Rent

1986

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 8 business establishments in ZIP 20899, employing approximately 198 people with a combined annual payroll of $12,362,000.

8

Businesses

198

Employees

$12.4M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 4 50.0%

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 20899 vs 20877 →

ZIP 20899 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 20899 ranks #0 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 20899 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 20899 ranks #null 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
20877 Gaithersburg, MD 34,321 1.5 mi
20880 Washington Grove, MD 450 2.3 mi
20886 Montgomery Village, MD 33,282 2.8 mi
20879 Gaithersburg, MD 24,360 2.8 mi
20878 Gaithersburg, MD 62,446 2.9 mi
20876 Germantown, MD 25,496 4.5 mi
20850 Rockville, MD 46,340 4.1 mi
20855 Derwood, MD 14,295 4.5 mi
20874 Germantown, MD 57,367 4.5 mi
20854 Potomac, MD 49,611 7.6 mi

More ZIP Codes in Montgomery County

20906 standard
Silver Spring, MD
Pop: 64,696
20878 standard
Gaithersburg, MD
Pop: 62,446
20874 standard
Germantown, MD
Pop: 57,367
20904 standard
Silver Spring, MD
Pop: 54,612
20854 standard
Potomac, MD
Pop: 49,611
20902 standard
Silver Spring, MD
Pop: 48,841

Related Areas

Montgomery County Gaithersburg, MD Maryland

Frequently Asked Questions

What county is ZIP code 20899 in? ▼
ZIP code 20899 (Gaithersburg) is located in Montgomery County, Maryland. Montgomery County contains multiple ZIP codes, see the full list at /counties/montgomery-md.
What is the population of ZIP code 20899? ▼
ZIP code 20899 in Gaithersburg, MD has a population of 142 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20899? ▼
The median household income in ZIP 20899 is $24,417, which is 68% below the national average of $76,288.
What is the demographic makeup of ZIP 20899? ▼
The largest racial group in ZIP 20899 is African American at 100.0%.
How many businesses are in ZIP code 20899? ▼
ZIP code 20899 has 8 business establishments employing approximately 198 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.

Read our methodology to see how this data is sourced, computed, and verified.