ZIP Code 20899 - Gaithersburg Maryland
Overview
20899 is the ZIP Code for The National Institute of Standards and Technology in Gaithersburg, Maryland. 20899 is entirely within Montgomery County. Regionally, 20899 is located in Metro DC.
ZIP Code 20899 Quick Stats
| ZIP Code Name | Gaithersburg |
| Organization | The National Institute of Standards and Technology |
| Primary County | Montgomery County |
| ZIP Code Type | Unique |
| Population (2022) | 143 |
| Area Code(s) | 240 / 301 |
| Current Time | EDT |
ZIP Code 20899 Map
20899 Demographics
The majority race/ethnicity residing in 20899 is African American. The current unemployment level in 20899 is 4.4%.
| Population | 143 |
| Population Growth Rate | 27.27% |
| Population Density | 305 People per Square Mile |
| Total Households | 130 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | African American - 78.26% |
20899 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 58 | 18.01% |
| Black | 252 | 78.26% |
| Hispanic | 12 | 3.73% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
20899 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 0 | 0% |
| Bachelor Degree | 0 | 0% |
| High School Diploma | 32 | 24.62% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 32 | 24.62% |
| 1 or More Years of College | 0 | 0% |
| Associates Degree | 56 | 43.08% |
| Masters Degree | 10 | 7.69% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
20899 Geography
| Coordinates | 39.13985443, -77.21835327 |
| Adjacent ZIP Codes | |
| Region | Metro DC |
| Metropolitan/Micropolitan Stat Area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 0.46889824 Square Miles |
20899 Schools
| School Districts in 20899 | |
| Elementary Schools in 20899 | |
| Middle Schools in 20899 | |
| High Schools in 20899 |