Gaithersburg, MD
Census ZIP code profile for Gaithersburg, MD - 5 ZIPs, total population 135,332. Median income, home value, education, commute, and demographics from the U.S. Census Bureau American Community Survey 2023 5-Year Estimates.
U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage
ACS city ledger plate
Sheet GAITHERSBURG-MD · Gaithersburg, MD 5 ZIPs · 135,332 pop · #2900/25278 · Montgomery County
INC-TOP · RANK-TOP · PHOTO-FINISH · BOOK-MID · OWN-LOW · POP-MID · SPREAD-SPLIT · HOME-HIGH
- INC-TOP $111,554
- RANK-TOP #2900/25278
- PHOTO-FINISH ≈ Silver Spring
- BOOK-MID 5 ZIPs
- OWN-LOW 56% owners
- POP-MID 135,332
- SPREAD-SPLIT 20899→20882
- HOME-HIGH $599,025
Nearest income peer: Silver Spring, MD (+ $1,597 income $)
Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.
Income neighbourhood around Gaithersburg
Lowest/highest poles plus county-sharing cities nearest Gaithersburg on average ZIP median household income. Full ladder: /cities.
- Takoma Park · lowest $83,870
Takoma Park · lowest
$83,870 median HH income
- Montgomery Vil · near $98,542
Montgomery Vil · near
$98,542 median HH income
- Gaithersburg · this city
Gaithersburg · this city
$111,554 median HH income
- Silver Spring · near
Silver Spring · near
$113,151 median HH income
- Germantown · near
Germantown · near
$117,377 median HH income
- Rockville · near
Rockville · near
$133,478 median HH income
- Potomac · highest
Potomac · highest
$250,001 median HH income
What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.
National city placement
According to ACS 5-Year Estimates, Gaithersburg, MD sits among US cities with an upper-quartile household income, on a mid-size population base, across a compact ZIP cluster.
- Top 11%
- household income vs 25,278 US cities
- 135,332
- city population (Census)
- 5
- USPS ZIP codes covered
- $111,554
- avg ZIP median income
Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.
High-income city with a manageable ZIP set (5 codes). Median household income averages $111,554 against unemployment of 15.0%. Home values around $599,025 and rents near $1,684 usually move together, compare two adjacent ZIPs when school-catchment pockets matter.
Gaithersburg sits in the lower half of Montgomery County on income: Rockville, Germantown and Bethesda report more, Montgomery Village and Takoma Park report less. Potomac marks the far end of that range at $250,000+, 124% above Gaithersburg.
Within-city ZIP comparison
Where the ZIP codes inside Gaithersburg differ
Gaithersburg's city average masks two linked splits. Median household income runs from $24,417 in ZIP 20899 to $184,136 in ZIP 20882, while home values span $468,100 in 20879 to $737,400 in 20882. Compare the endpoint ZIPs before treating the city-level number as a neighborhood-level answer.
- Income high-to-low ratio
- 7.5×
- Home-value high-to-low ratio
- 1.6×
- Poverty-rate spread
- 7.9 points
20899 to 20882
20879 to 20882
20882 to 20877
Derived from the published ACS 2023 ZIP-level records shown on this site. A high-to-low ratio compares the highest and lowest available ZIP values; it is not a score or forecast.
Population concentration
Lead ZIP 20878 outweighs Gaithersburg's long list
Even with 5 codes on the table, 20878 holds about 46% of the 135,332 residents in Gaithersburg. Rank the ZIP table by population before trusting any city-level dollar figure.
Census ZBP business roll-up
Dense employer mosaic across Gaithersburg
Citywide ZBP: 4,482 establishments, 59,554 employees , annual payroll $4,380,523k (~33 establishments per 1,000 residents) across 5 of 5 ZIPs. Peak business ZIP 20878 (2,087 units) ; leading NAICS Professional, scientific, and technical services (851) · also Health care and social assistance · Construction .
ZIP Codes in Gaithersburg, MD
These ZIP codes sit in Montgomery County, which covers 45 ZIP codes in all; 5 of them fall in Gaithersburg. See the Montgomery County roll-up →
Gaithersburg sits in the lower half of Montgomery County on income: Rockville, Germantown and Bethesda report more, Montgomery Village and Takoma Park report less. Potomac marks the far end of that range at $250,000+, 124% above Gaithersburg.
Side-by-side: Compare 20878 vs 20877 →
Gaithersburg roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Gaithersburg, .