ZIP code 37742: Greenback, TN
37742 is a ZIP code in Greenback, Tennessee, mainly in Loudon County, part of the Knoxville, TN metro area. About 7,046 people live here.
- Population
- 7,046
- Median household income
- $88,983
- Typical home value
- $442,900+4.4% in 12 months
- Median rent
- $1,054gross, per month
- Median age
- 42.2
- Homeowners
- 91.9%of occupied homes
Shaded: ZIP code 37742's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 37742 details
| City | Greenback |
|---|---|
| State | Tennessee |
| County | Loudon County (also partly Blount County) |
| Metro area | Knoxville, TN |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 49.4 sq mi, plus 2.9 sq mi of water |
| Population density | 143 people per sq mi |
| Bachelor's degree or higher | 15.2% of adults 25+ |
| Average commute | 30.1 minutes |
| Center coordinates | 35.67584, -84.17925 |
Median rent in 37742 by bedrooms
| Size | Median gross rent |
|---|---|
| 2 bedrooms | $1,131/mo |
| 3 bedrooms | $953/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 37742
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 37801 | Maryville, TN | 5.6 mi | 28,090 |
| 37737 | Friendsville, TN | 6.8 mi | 7,081 |
| 37772 | Lenoir City, TN | 8.3 mi | 14,646 |
| 37774 | Loudon, TN | 10.7 mi | 21,784 |
| 37803 | Maryville, TN | 11.2 mi | 33,822 |
| 37777 | Louisville, TN | 12.4 mi | 12,877 |
| 37878 | Tallassee, TN | 12.4 mi | 761 |
| 37885 | Vonore, TN | 12.4 mi | 6,271 |
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 37742?
A typical home in ZIP code 37742 is worth about $442,900 (Zillow Home Value Index). The median household here earns $88,983 a year. See what buying here would cost per month, with Tennessee average taxes and insurance filled in.
Monthly payment for a $442,900 homeWhat can a $88,983 income afford?Rental property numbers
About ZIP code 37742
What city is ZIP code 37742?
ZIP code 37742 is in Greenback, TN, in Loudon County.
What county is ZIP code 37742 in?
37742 is mainly in Loudon County, Tennessee, and partly in Blount County.
What is the population of ZIP code 37742?
About 7,046 people live in ZIP code 37742, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 37742 in?
37742 is in Eastern Time (UTC−5). It observes daylight saving time.