ZIP code 63084: Union, MO
63084 is a ZIP code in Union, Missouri, mainly in Franklin County, part of the St. Louis, MO-IL metro area. About 20,708 people live here.
- Population
- 20,708
- Median household income
- $75,992
- Typical home value
- $259,000+4.4% in 12 months
- Median rent
- $855gross, per month
- Median age
- 36.7
- Homeowners
- 71.3%of occupied homes
Shaded: ZIP code 63084's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 63084 details
| City | Union |
|---|---|
| State | Missouri |
| County | Franklin County |
| Metro area | St. Louis, MO-IL |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 76.3 sq mi, plus 0.1 sq mi of water |
| Population density | 272 people per sq mi |
| Bachelor's degree or higher | 21.6% of adults 25+ |
| Average commute | 25.1 minutes |
| Center coordinates | 38.42190, -91.01929 |
Median rent in 63084 by bedrooms
| Size | Median gross rent |
|---|---|
| Studio | $286/mo |
| 1 bedroom | $712/mo |
| 2 bedrooms | $851/mo |
| 3 bedrooms | $1,038/mo |
| 4 bedrooms | $1,267/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 63084
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 63077 | Saint Clair, MO | 6.7 mi | 11,391 |
| 63013 | Beaufort, MO | 7.3 mi | 1,136 |
| 63090 | Washington, MO | 8.0 mi | 23,258 |
| 63089 | Villa Ridge, MO | 8.1 mi | 5,662 |
| 63039 | Gray Summit, MO | 10.7 mi | 986 |
| 63056 | Leslie, MO | 10.7 mi | 1,896 |
| 63072 | Robertsville, MO | 11.5 mi | 3,469 |
| 63079 | Stanton, MO | 11.6 mi | 60 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 63084?
A typical home in ZIP code 63084 is worth about $259,000 (Zillow Home Value Index). The median household here earns $75,992 a year. See what buying here would cost per month, with Missouri average taxes and insurance filled in.
Monthly payment for a $259,000 homeWhat can a $75,992 income afford?Rental property numbers
About ZIP code 63084
What city is ZIP code 63084?
ZIP code 63084 is in Union, MO, in Franklin County.
What county is ZIP code 63084 in?
63084 is mainly in Franklin County, Missouri.
What is the population of ZIP code 63084?
About 20,708 people live in ZIP code 63084, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 63084 in?
63084 is in Central Time (UTC−6). It observes daylight saving time.