ZIP code 63121
Where is ZIP code 63121?
Saint Louis, Missouri
St. Louis County · Standard ZIP code
ZIP code 63121 belongs to Saint Louis, Missouri in St. Louis County. 63121 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area codes 314 and 557. About 25,008 people live in the 63121 area, where the median household income is $42,701. The closest ZIP codes are 63133 (Saint Louis, 1.8 mi south), 63140 (Saint Louis, 2.4 mi northwest) and 63135 (Saint Louis, 2.6 mi north).
| ZIP code | 63121 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Saint Louis |
| Also accepted | Cool Valley, Glen Echo Pk, Hillsdale, Normandy, Norwood Court, Uplands Park, Velda City |
| State | Missouri (MO) |
| County | St. Louis County |
| Time zone | Central Time · now |
| Area codes | 314, 557 |
| Coordinates | 38.7074, -90.303 map |
| 3-digit prefix | 631 |
Population and income in 63121
| Population | 25,008 · higher than 93% of Missouri ZIP codes |
|---|---|
| People per square mile | 3,693 · higher than 96% of Missouri ZIP codes |
| Median age | 33.2 years · lower than 90% of Missouri ZIP codes |
| Men / women | 44% / 56% |
| Median household income | $42,701 · lower than 90% of Missouri ZIP codes |
| Income per person | $27,628 |
| Below the poverty line | 26% |
| Bachelor’s degree or higher | 24% of adults 25+ |
| Median home value | $95,600 · lower than 88% of Missouri ZIP codes |
| Median rent | $985 a month |
| Housing units | 13,008 |
| Households | 11,142 (2.15 people on average) |
| Owners / renters | 52% / 48% |
| Land area | 6.77 sq mi |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 63121. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 63121
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 63133 | Saint Louis, MO | 1.8 mi S | Standard |
| 63140 | Saint Louis, MO | 2.4 mi NW | Standard |
| 63135 | Saint Louis, MO | 2.6 mi N | Standard |
| 63120 | Saint Louis, MO | 2.6 mi SE | Standard |
| 63130 | Saint Louis, MO | 3.1 mi S | Standard |
| 63114 | Saint Louis, MO | 3.1 mi W | Standard |
| 63134 | Saint Louis, MO | 3.3 mi NW | Standard |
| 63112 | Saint Louis, MO | 3.4 mi S | Standard |
| 63136 | Saint Louis, MO | 3.4 mi NE | Standard |
| 63147 | Saint Louis, MO | 3.6 mi E | Standard |
| 63115 | Saint Louis, MO | 4.1 mi SE | Standard |
| 63145 | Saint Louis, MO | 4.1 mi NW | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 63121 or measure the distance to another ZIP code.
How to address mail to 63121
123 MAIN ST
SAINT LOUIS MO 63121
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts COOL VALLEY, GLEN ECHO PK, HILLSDALE, NORMANDY, NORWOOD COURT, UPLANDS PARK and VELDA CITY as the city name for 63121. Avoid Bel Nor, Bel Ridge, Bellerive, Beverly Hills and Northwoods and other local names: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (63121-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Saint Louis, MO
- 63101
- 63102
- 63103
- 63104
- 63105
- 63106
- 63107
- 63108
- 63109
- 63110
- 63111
- 63112
- 63113
- 63114
- 63115
- 63116
- 63117
- 63118
- 63119
- 63120
- 63122
- 63123
- 63124
- 63125
- 63126
- 63127
- 63128
- 63129
- 63130
- 63131
- 63132
- 63133
- 63134
- 63135
- 63136
- 63137
- 63138
- 63139
- 63140
- 63141
- 63143
- 63144
- 63145
- 63146
- 63147
- 63150
- 63151
- 63155
- 63156
- 63157
- 63158
- 63160
- 63163
- 63164
- 63166
- 63167
- 63169
- 63171
- 63177
- 63178
- 63179
- 63180
- 63188
- 63195
- 63197
- 63199
All Saint Louis ZIP codes with population and income →
Questions
- What city is ZIP code 63121?
- 63121 is a Saint Louis, Missouri ZIP code. Cool Valley, Glen Echo Pk, Hillsdale, Normandy, Norwood Court, Uplands Park and Velda City are also accepted as the city name.
- What county is 63121 in?
- ZIP code 63121 is in St. Louis County, Missouri.
- What time zone is ZIP code 63121 in?
- 63121 is in the Central Time zone (America/Chicago).
- What area code is 63121?
- Phone numbers in ZIP code 63121 use area codes 314 and 557.
- What is the population of ZIP code 63121?
- About 25,008 people live in ZIP code 63121, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 63121?
- The median household income in 63121 is $42,701 a year, lower than 90% of Missouri ZIP codes.
- What ZIP codes are near 63121?
- The nearest ZIP codes to 63121 are 63133 (Saint Louis, 1.8 miles), 63140 (Saint Louis, 2.4 miles), 63135 (Saint Louis, 2.6 miles) and 63120 (Saint Louis, 2.6 miles).