Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/TN/FINCASTLE

Fincastle ZIP codes, Tennessee

No ZIP code is named for Fincastle, TN; addresses there use a neighbouring town's name. The ZIP code covering it is 37766. Its area code is 423.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
1,374
Area code
423

NANPA lists no telephone rate centre for Fincastle itself, so these are the area codes of the nearest one, La Follette (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Fincastle in numbers

About 1,374 people live in Fincastle, in 576 households. The median household income is $51,591 a year, 26% below the Tennessee median of $69,595 (US: $80,734). The median owner-occupied home is valued at $215,300 (25% below the Tennessee median). The median age is 44.9; 15.0% of adults 25 and over hold a bachelor's degree or higher (31.1% across Tennessee); the average commute takes 34 minutes.

Population1,374Fincastle1,374
Households576Fincastle576
Median age44.9Fincastle44.9Tennessee38.9US 38.9
Median household income$51,591Fincastle$51,591Tennessee$69,595US $80,734
Median home value$215,300Fincastle$215,300Tennessee$286,700US $332,700
Bachelor's degree or higher15.0%Fincastle15.0%Tennessee31.1%US 35.7%
Mean commute34.1 minFincastle34.1 minTennessee25.7 minUS 26.4 min
Population density376 / sq miFincastle376 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Fincastle CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering Fincastle

These ZIP codes cover part of Fincastle but are addressed as somewhere else.

ZIP codes overlapping Fincastle
ZIP City Type Population Median income Median home
37766 La Follette , TN Standard 18,554 $50,063 $187,900

Map of Fincastle ZIP codes

37766

The ZIP codes of Fincastle, TN, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Fincastle

The nearest larger towns are La Follette (7,273 people, 4.9 mi), Jacksboro (2,650 people, 9.3 mi) and Caryville (2,073 people, 11 mi).

Towns near Fincastle
TownPopulationDistance
La Follette 7,273 4.9 mi
Jacksboro 2,650 9.3 mi
Maynardville 2,528 17.3 mi
Clinton 10,239 21.7 mi
Halls 10,272 23.1 mi
Middlesborough, KY 9,123 23.2 mi
Williamsburg, KY 5,270 24.0 mi
New Tazewell 2,799 24.7 mi
Harrogate 4,368 25.3 mi
Powell 13,739 25.4 mi
Blaine 3,213 26.6 mi
Oneida 3,819 26.9 mi
Tazewell 2,902 27.0 mi
Mascot 3,277 28.0 mi

More nearby: every ZIP code in Campbell County · Tennessee ZIP codes

Cite this page

zipcodes.pro. “Fincastle, TN ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/tn/fincastle

Underlying data is public domain or openly licensed — sources, vintages and licences.