Zip Code 37774
Loudon, Tennessee — Loudon County
📍 ZIP code 37774 is in Loudon, Loudon County, Tennessee.
ZIP code 37774 is located in Loudon, Loudon County, Tennessee. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 20,989. The area code for ZIP code 37774 is 423.
Quick Answer
Zip code 37774 is in Loudon, Tennessee (Loudon County). It has a population of 20,989, median household income of $83,724, and median home value of $329,600.
Population
20,989
Income
$83,724
Home Value
$329,600
Climate
89°F / 28°F
About Zip Code 37774
Zip code 37774 is located in Loudon, Tennessee, within Loudon County. Home to approximately 20,989 residents, this area sits at an elevation of 889 ft and falls within the Central (CST/CDT) timezone. The local area code is 423.
The median household income is $83,724 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $329,600, and the cost of living index is 103 (3% above the national average of 100).
Summers average a high of 89°F while winters drop to 28°F. The area receives about 55 in of rain and 4 in of snow annually. The zip code covers 87.5 square miles of land area and 7.1 square miles of water.
Key Statistics
20,989
$83,724
$329,600
Central (CST/CDT)
423
889 ft
87.5 sq mi
57.8
10,020
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Compare With Nearby Zip Codes
| Metric | 37774 | 37846 | 37771 | 37772 | 37763 | 37874 |
|---|---|---|---|---|---|---|
| City | Loudon, TN | Philadelphia, TN | Lenoir City, TN | Lenoir City, TN | Kingston, TN | Sweetwater, TN |
| Population | 20,989 | 4,177 | 17,829 | 14,164 | 16,394 | 16,640 |
| Median Income | $83,724 | $71,147 | $62,338 | $95,164 | $77,039 | $52,912 |
| Home Value | $329,600 | $200,000 | $236,700 | $367,300 | $234,000 | $171,900 |
| Cost of Living | 103 | 75 | 75 | 118 | 89 | 60 |
| Median Age | 57.8 | 42.3 | 41.1 | 47.4 | 49.2 | 41.6 |
Cost of Living
100 = National Average. Loudon's cost of living is 3% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
3.9x
Demographics
Zip code 37774 has a population of 20,989 people with a median age of 57.8. There are 10,020 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Loudon (37774) population trend from 2010 to 2024
↑ 81.0%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
89°F
28°F
55 in
4 in
Loudon experiences warm summers with average highs around 89°F. Winters are cool with lows averaging 28°F. The area receives about 4 in of snow per year.
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Housing & Economy
Median Home Value
$329,600
Median Household Income
$83,724
With 10,020 housing units across 87.5 square miles, 37774 has a housing density of 115 units per square mile. The home price-to-income ratio is 3.9x.
Location & Geography
Latitude
35.7291°
Longitude
-84.3590°
Land Area
87.5 sq mi
Water Area
7.1 sq mi
Nearby Zip Codes
Zip codes closest to 37774 (Loudon, TN) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 37774's $83,724. A way to compare Loudon to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 37774 (Loudon, TN). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Loudon, Tennessee?
Loudon, Tennessee uses zip code 37774.
What county is zip code 37774 in?
Zip code 37774 is located in Loudon County, Tennessee.
What is the population of zip code 37774?
The population of zip code 37774 is 20,989 with a median age of 57.8.
Is 37774 in Loudon, Tennessee?
Yes, zip code 37774 is in Loudon, Loudon County, Tennessee. The area code is 423.
Frequently Asked Questions
What city is zip code 37774 in?
Zip code 37774 is in Loudon, Tennessee. It is part of Loudon County and uses the Central (CST/CDT) timezone.
What is zip code 37774?
Zip code 37774 is a U.S. postal code in Loudon, Tennessee (Loudon County). It has a population of 20,989 and covers 87.5 square miles.
What is the population of zip code 37774?
The population of zip code 37774 (Loudon, TN) is 20,989 with a median age of 57.8. There are approximately 10,020 housing units in this area.
What is the median income in zip code 37774?
The median household income in zip code 37774 (Loudon, TN) is $83,724 per year. The cost of living index is 103 (100 = national average).
What is the average home price in zip code 37774?
The median home value in zip code 37774 (Loudon, TN) is $329,600. The cost of living index is 103 compared to the national average of 100.
What county is zip code 37774 in?
Zip code 37774 is located in Loudon County, Tennessee. The primary city is Loudon.
What is the area code for zip code 37774?
Zip code 37774 in Loudon, TN uses area code 423. It is located in the Central (CST/CDT) timezone.
Is zip code 37774 a good place to live?
Zip code 37774 (Loudon, TN) has a cost of living index of 103 (100 = national average), a median household income of $83,724, and median home values of $329,600. The median age is 57.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 37774?
The cost of living index for zip code 37774 (Loudon, TN) is 103, where 100 represents the national average. This area is above the national average. Median home value: $329,600.
What schools serve zip code 37774?
Zip code 37774 in Loudon, Tennessee is served by the local school district of Loudon County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.