North Potomac, MD ZIP Codes
2 ZIP codes serve North Potomac, Maryland: 20878 and 20850. Together they are home to 116,468 residents in 45,396 households. That is more than the 23,922 people counted inside North Potomac Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $125,950 in 20850 to $144,313 in 20878.
North Potomac Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 23,922 |
| Households | 8,144 |
| Median household income | $186,514 |
| Median home value | $826,200 |
| Median age | 46.5 |
| Median rent | $2,413 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 116,468 |
| Households (sum of ZIP codes) | 45,396 |
| Median household income, range across ZIP codes | $125,950 (20850) to $144,313 (20878) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $135,754 |
| Homeowners | 60.4% |
| Households with kids under 18 | 30.3% |
| Moved in the past year | 14.3% |
| Carrier routes in EDDM2GO's route library | 97 routes, 48,936 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in North Potomac: 20878 ($144,313)
- Most residents: 20878 (66,115 people)
- Highest homeownership: 20878 (69.2% own their home)
- Most households with kids: 20878 (34.3% of households)
- Most new movers: 20850 (18.0% moved in last year)
- Youngest median age: 20850 (41.2 years)
- Highest median home value: 20878 ($715,800)
Every ZIP code in North Potomac
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20878 | Gaithersburg | 66,115 | 24,237 | $144,313 | $715,800 | 69.2% | 34.3% | 11.4% | 51 | 27,026 | 25% of its land |
| 20850 | Rockville | 50,353 | 21,159 | $125,950 | $714,400 | 50.3% | 25.8% | 18.0% | 46 | 25,821 | 10% of its land |
A ZIP code is listed for North Potomac when at least 10% of its land lies inside the North Potomac Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is North Potomac. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside North Potomac.
Counties
- Montgomery County — 48 ZIP codes
Nearby cities sharing these ZIP codes
- Gaithersburg — 5 ZIP codes
- Darnestown — 2 ZIP codes
- Rockville — 4 ZIP codes
- Travilah — 2 ZIP codes
Price a mailing to North Potomac ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in North Potomac, MD?
- 20878 and 20850. A ZIP code is listed for North Potomac when at least 10% of its land lies inside the North Potomac Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is North Potomac.
- What is the population of North Potomac, MD?
- The Census Bureau counts 23,922 residents inside North Potomac Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve North Potomac hold 116,468 residents in all.
- What is the median household income in North Potomac, MD?
- $186,514 inside North Potomac Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $125,950 to $144,313.
- Which North Potomac ZIP code has the highest median household income?
- 20878, at $144,313, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in North Potomac, MD?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 97 carrier routes reaching 48,936 residential and 3,975 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.