Crime Score for ZIP 20899, Gaithersburg, MD
Gaithersburg · July 2026 snapshot · powered by SpotCrime
Higher crime than 99.71% of US ZIP codes
National rank
#32
of 13,225 scored ZIPs
Maryland rank
#1
of 352 in state
Score index
1655.2
crime intensity
Snapshot
July 2026
updated monthly
ZIP code 20899 covers part of Gaithersburg in Maryland. In July 2026 it scored in the 99.7th percentile for reported crime among 13,225 scored US ZIP codes. That is a Extreme Crime rating, in the top one percent of scored ZIP codes for reported crime.
Nationally it ranks #32, where #1 is the highest-crime ZIP in the country. Within Maryland it ranks #1 of 352. That is 31.9 points above the Maryland median of 67.8. It fell 0.08 percentile points between June 2026 and July 2026, from 99.79 to 99.71.
Higher percentile and a lower rank number both mean more reported crime. Levels are fixed cutoffs on the percentile: Low under 25, Below Average to 50, Above Average to 75, High to 90, Very High to 99, Extreme above. Scores reflect incidents reported by police and published by SpotCrime, so they measure reported crime, not every event that happens.
Monthly history
| Month | Percentile | National rank | State rank |
|---|---|---|---|
| July 2026(latest) | 99.71 | #32 | #1 |
| June 2026 | 99.79 | #27 | #1 |
Nearby ZIP codes
6 of 6 score lower than 20899. Closest scored ZIPs by distance.
County
County not available.
On SpotCrime
The score on this page is built from the same incident reports SpotCrime maps.
Questions about 20899
- Is ZIP code 20899 safe?
- CrimeScore does not label places safe or unsafe. ZIP 20899 scores in the 99.7th percentile for reported crime as of July 2026, which is a Extreme Crime rating: in the top one percent of scored ZIP codes for reported crime.. Scores reflect police reports, so areas with less reporting can look calmer than they are.
- How is the crime score for 20899 calculated?
- SpotCrime collects police incident reports for the area, weights them into a crime intensity index, and ranks that index against every scored US ZIP code to get a percentile. The score is republished monthly and carries a model hash so you can tell which version produced it.
- How does 20899 compare with the rest of Maryland?
- It ranks #1 of 352 scored ZIP codes in Maryland, against a state median of the 67.8th percentile. Nationally it ranks #32 of 13,225.
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Data: CrimeScore by SpotCrime, July 2026 publication. Scores describe areas, not people, and are not predictions. Terms.