ZIP code 21023
Where is ZIP code 21023?
Butler, Maryland
Baltimore County · PO Box only ZIP code
ZIP code 21023 belongs to Butler, Maryland in Baltimore County. 21023 is a PO Box only ZIP code: it is used for post office boxes at the Butler post office, not for street addresses. It is in the Eastern Time zone and uses area codes 410, 443 and 667. About 66 people live in the 21023 area, where the median household income is $84,474. The closest ZIP codes are 21152 (Sparks Glencoe, 3.3 mi east), 21020 (Boring, 3.4 mi west) and 21155 (Upperco, 3.7 mi northwest).
| ZIP code | 21023 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Butler |
| State | Maryland (MD) |
| County | Baltimore County |
| Time zone | Eastern Time · now |
| Area codes | 410, 443, 667 |
| Coordinates | 39.533, -76.7432 map |
| 3-digit prefix | 210 |
Population and income in 21023
| Population | 66 · lower than 96% of Maryland ZIP codes |
|---|---|
| People per square mile | 62 · lower than 86% of Maryland ZIP codes |
| Median age | 42.4 years · higher than 53% of Maryland ZIP codes |
| Men / women | 44% / 56% |
| Median household income | $84,474 · lower than 71% of Maryland ZIP codes |
| Income per person | $43,979 |
| Below the poverty line | 0.0% |
| Bachelor’s degree or higher | 14% of adults 25+ |
| Median home value | $881,600 · higher than 95% of Maryland ZIP codes |
| Housing units | 30 |
| Households | 30 (2.2 people on average) |
| Owners / renters | 100% / 0.0% |
| Land area | 1.07 sq mi (plus 0.01 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21023. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21023
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21152 | Sparks Glencoe, MD | 3.3 mi E | Standard |
| 21020 | Boring, MD | 3.4 mi W | PO Box only |
| 21155 | Upperco, MD | 3.7 mi NW | Standard |
| 21030 | Cockeysville, MD | 4.9 mi SE | Standard |
| 21071 | Glyndon, MD | 5.4 mi SW | PO Box only |
| 21065 | Hunt Valley, MD | 5.7 mi SE | Unique |
| 21031 | Hunt Valley, MD | 5.9 mi SE | Standard |
| 21136 | Reisterstown, MD | 6.3 mi SW | Standard |
| 21117 | Owings Mills, MD | 7.5 mi S | Standard |
| 21111 | Monkton, MD | 8.1 mi E | Standard |
| 21093 | Lutherville Timonium, MD | 8.4 mi SE | Standard |
| 21120 | Parkton, MD | 8.4 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21023 or measure the distance to another ZIP code.
How to address mail to 21023
PO BOX 123
BUTLER MD 21023
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21023-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21023?
- 21023 is a Butler, Maryland ZIP code.
- What county is 21023 in?
- ZIP code 21023 is in Baltimore County, Maryland.
- What time zone is ZIP code 21023 in?
- 21023 is in the Eastern Time zone (America/New_York).
- What area code is 21023?
- Phone numbers in ZIP code 21023 use area codes 410, 443 and 667.
- What is the population of ZIP code 21023?
- About 66 people live in ZIP code 21023, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21023?
- The median household income in 21023 is $84,474 a year, lower than 71% of Maryland ZIP codes.
- Can I use 21023 for a street address?
- No. 21023 is only for PO Boxes. Street addresses in Butler use another ZIP code.
- What ZIP codes are near 21023?
- The nearest ZIP codes to 21023 are 21152 (Sparks Glencoe, 3.3 miles), 21020 (Boring, 3.4 miles), 21155 (Upperco, 3.7 miles) and 21030 (Cockeysville, 4.9 miles).