ZIP code 63123
Where is ZIP code 63123?
Saint Louis, Missouri
St. Louis County · Standard ZIP code
ZIP code 63123 belongs to Saint Louis, Missouri in St. Louis County. 63123 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 49,077 people live in the 63123 area, where the median household income is $77,055. The closest ZIP codes are 63125 (Saint Louis, 2.4 mi southeast), 63109 (Saint Louis, 2.9 mi northeast) and 63119 (Saint Louis, 3.1 mi northwest).
| ZIP code | 63123 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Saint Louis |
| Also accepted | Affton, Grantwood Village, Grantwood Vlg, Lakeshire, Mackenzie, Marlborough, Saint George |
| State | Missouri (MO) |
| County | St. Louis County |
| Time zone | Central Time · now |
| Area codes | 314, 557 |
| Coordinates | 38.5488, -90.3198 map |
| 3-digit prefix | 631 |
Population and income in 63123
| Population | 49,077 · higher than 99% of Missouri ZIP codes |
|---|---|
| People per square mile | 3,941 · higher than 97% of Missouri ZIP codes |
| Median age | 40.9 years · lower than 54% of Missouri ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $77,055 · higher than 74% of Missouri ZIP codes |
| Income per person | $44,373 |
| Below the poverty line | 7.9% |
| Bachelor’s degree or higher | 38% of adults 25+ |
| Median home value | $219,400 · higher than 71% of Missouri ZIP codes |
| Median rent | $1,006 a month |
| Housing units | 23,178 |
| Households | 21,755 (2.25 people on average) |
| Owners / renters | 75% / 25% |
| Land area | 12.45 sq mi (plus 0.1 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 63123. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 63123
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 63125 | Saint Louis, MO | 2.4 mi SE | Standard |
| 63109 | Saint Louis, MO | 2.9 mi NE | Standard |
| 63119 | Saint Louis, MO | 3.1 mi NW | Standard |
| 63126 | Saint Louis, MO | 3.2 mi W | Standard |
| 63116 | Saint Louis, MO | 3.8 mi NE | Standard |
| 63111 | Saint Louis, MO | 3.9 mi E | Standard |
| 63143 | Saint Louis, MO | 4.3 mi N | Standard |
| 63139 | Saint Louis, MO | 4.5 mi N | Standard |
| 63127 | Saint Louis, MO | 4.9 mi W | Standard |
| 63144 | Saint Louis, MO | 5 mi N | Standard |
| 63128 | Saint Louis, MO | 5.2 mi SW | Standard |
| 62240 | East Carondelet, IL | 5.4 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 63123 or measure the distance to another ZIP code.
How to address mail to 63123
123 MAIN ST
SAINT LOUIS MO 63123
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts AFFTON, GRANTWOOD VILLAGE, GRANTWOOD VLG, LAKESHIRE, MACKENZIE, MARLBOROUGH and SAINT GEORGE as the city name for 63123. Avoid Green Park and Wilbur Park: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (63123-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
- 63121
- 63122
- 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 63123?
- 63123 is a Saint Louis, Missouri ZIP code. Affton, Grantwood Village, Grantwood Vlg, Lakeshire, Mackenzie, Marlborough and Saint George are also accepted as the city name.
- What county is 63123 in?
- ZIP code 63123 is in St. Louis County, Missouri.
- What time zone is ZIP code 63123 in?
- 63123 is in the Central Time zone (America/Chicago).
- What area code is 63123?
- Phone numbers in ZIP code 63123 use area codes 314 and 557.
- What is the population of ZIP code 63123?
- About 49,077 people live in ZIP code 63123, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 63123?
- The median household income in 63123 is $77,055 a year, higher than 74% of Missouri ZIP codes.
- What ZIP codes are near 63123?
- The nearest ZIP codes to 63123 are 63125 (Saint Louis, 2.4 miles), 63109 (Saint Louis, 2.9 miles), 63119 (Saint Louis, 3.1 miles) and 63126 (Saint Louis, 3.2 miles).