Monrovia, MD ZIP Codes
One ZIP code serves Monrovia, Maryland: 21770. Together they are home to 8,751 residents in 2,622 households. That is more than the 3,568 people counted inside Monrovia Census-designated place, because these ZIP codes reach past its boundary.
Monrovia Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 3,568 |
| Households | 1,041 |
| Median household income | $207,153 |
| Median home value | $805,100 |
| Median age | 38.1 |
| Median rent | not published |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 8,751 |
| Households (sum of ZIP codes) | 2,622 |
| Median household income, range across ZIP codes | $183,571 (21770) to $183,571 (21770) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $183,571 |
| Homeowners | 98.8% |
| Households with kids under 18 | 47.7% |
| Moved in the past year | 6.4% |
| Carrier routes in EDDM2GO's route library | 6 routes, 2,971 homes (1 of 1 ZIP codes) |
Every ZIP code in Monrovia
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21770 | Monrovia | 8,751 | 2,622 | $183,571 | $632,500 | 98.8% | 47.7% | 6.4% | 6 | 3,064 | 20% of its land; mailing city |
A ZIP code is listed for Monrovia when at least 10% of its land lies inside the Monrovia Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Monrovia. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Monrovia.
Counties
- Frederick County — 33 ZIP codes
Nearby cities sharing these ZIP codes
- Green Valley — 3 ZIP codes
Price a mailing to Monrovia ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Monrovia, MD?
- 21770. A ZIP code is listed for Monrovia when at least 10% of its land lies inside the Monrovia Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Monrovia.
- What is the population of Monrovia, MD?
- The Census Bureau counts 3,568 residents inside Monrovia Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Monrovia hold 8,751 residents in all.
- What is the median household income in Monrovia, MD?
- $207,153 inside Monrovia Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $183,571 to $183,571.
- How many carrier routes and mailboxes are in Monrovia, MD?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 2,971 residential and 93 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.