Home age in ZIP 37912, Knoxville, TN: median built 1979

Home age is not roof age, and the Census does not record replacements. ZIP 37912 in Knoxville, TN: median home built 1979; 80.9% of homes (8,831) are older than 25 years and 5.2% (571) were built since 2010, out of 10,916 homes.

U.S. Census Bureau, American Community Survey 2019 to 2023 (5-year estimates), retrieved October 9, 2026. Area = Census ZIP Code Tabulation Area 37912.

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Share of homes in ZIP 37912 by decade builtColumns from the pre-1940 decade on the left to 2020 and later on the right. pre-1940 2.5 percent; 1940s 5.3 percent; 1950s 14.2 percent; 1960s 11.8 percent; 1970s 18.3 percent; 1980s 14.7 percent; 1990s 14 percent; 2000s 13.9 percent; 2010s 3.7 percent; 2020+ 1.5 percentpre-1940: 278 homes, 2.5%2.5%pre-1940Knox County: 6.7%1940s: 579 homes, 5.3%5.3%1940sKnox County: 4.9%1950s: 1,548 homes, 14.2%14.2%1950sKnox County: 8.2%1960s: 1,283 homes, 11.8%11.8%1960sKnox County: 9.7%1970s: 2,003 homes, 18.3%18.3%1970sKnox County: 14.4%1980s: 1,608 homes, 14.7%14.7%1980sKnox County: 13.0%1990s: 1,532 homes, 14.0%14%1990sKnox County: 15.7%2000s: 1,514 homes, 13.9%13.9%2000sKnox County: 15.0%2010s: 405 homes, 3.7%3.7%2010sKnox County: 10.6%2020+: 166 homes, 1.5%1.5%2020+Knox County: 1.7%Built 1999 or earlier: 80.9% of homes (8,831)ZIP 37912, built before 2000built 2000 or laterKnox County

Share of the 10,916 housing units in the ZIP, by decade built. The red marks are Knox County. This counts houses, not roofs: a roof is replaced several times in the life of a house, and no federal survey records when.

ZIP 37912 next to Knoxville and Knox County

IndicatorZIP 37912KnoxvilleKnox CountyRank among 8 ZIPs of Knoxville on this site
Housing units10,91694,885214,6064th of 8 largest
Median year built1979197419856th of 8 oldest
Built before 198052.1%59.4%44%
Built before 200080.9%no data72.7%4th of 8 highest share
Built since 20105.2%no data12.3%
Owner-occupied homes52.5%46.6%64.9%3rd of 8 highest share
Single-family units57.3%57.4%no data
Median home value$185,600 (+/- $13,605)$214,000$279,7008th of 8 highest
Median household income$44,754 (+/- $3,622)$50,994no data6th of 8 highest

City figures are for the Census place, county figures for the county; “no data” means the Census file does not publish that figure. Value and income are survey estimates, the plus-or-minus is the 90% margin of error.

Every decade in ZIP 37912

BuiltShare of Knox CountyShare of ZIPHomes in ZIP 37912
2020+1.7%1.5%166
2010s10.6%3.7%405
2000s15.0%13.9%1,514
1990s15.7%14.0%1,532
1980s13.0%14.7%1,608
1970s14.4%18.3%2,003
1960s9.7%11.8%1,283
1950s8.2%14.2%1,548
1940s4.9%5.3%579
pre-19406.7%2.5%278

Counts are Census estimates of housing units by year built (table B25034). If a roof had never been replaced, it would be 3 to 6 years old on a house from the 2020s, 17 to 26 on one from the 2000s, 37 to 46 on one from the 1980s and 87 or more on one from before 1940. Most older houses have had at least one replacement, and the Census does not record when.

What the numbers say about ZIP 37912

ZIP 37912 has 10,916 housing units: 8,831 (80.9%) were built before 2000, 571 (5.2%) in 2010 or later, and 2,003 (18.3%) in the 1970s, its largest era. The median year built is 1979 (Knoxville: 1974), so 5 years newer than the city.

Housing mix and money, from the same survey: 52.5% of occupied homes are owner-occupied; 57.3% of units are single-family houses; the median owner-occupied home is valued at $185,600, give or take $13,605; median household income is $44,754, give or take $3,622; the ZIP holds 11.5% of the housing units the Census counts in Knoxville, 10,916 of them. These are survey estimates with margins of error, and for a small ZIP the margin can be wide.

Reading this for roofs, carefully: the Census records when a house was built, never when its roof was last replaced. If every roof were still the one installed with its house, 7,299 units (66.9%, built before 1990) would be past the 30-year top of the usual asphalt-shingle range, 1,532 (14%, the 1990s) would mostly sit past it, 1,514 (13.9%, the 2000s) would mostly be inside the 20 to 30 year window and 571 (5.2%, 2010 onward) would be younger than it. Most older roofs have been replaced, so treat these as the pool of houses where an old roof is possible, not as a count of old roofs.

Roof age calculator for ZIP 37912

Enter the year your house was built, and the year the roof was last replaced if you know it. It starts at the median year built for this ZIP. The share of neighbours’ homes older than yours comes from this ZIP’s own decade counts.

–years old (roof)
–of homes in ZIP 37912 are older
–vs. the ZIP median year built

Material ranges are general planning figures (the same ones as on our roof-age page), not warranties. Sun, storms, attic ventilation and installation quality move them. The decade shares assume homes were built evenly within each decade. This is not an inspection: a roofer on the roof decides.

Map: ZIP 37912 among Knoxville’s ZIP areas

Map of ZIP 37912 and nearby ZIP areas, shaded by the share of homes built before 2000ZIP 37919: 15,499 homes, 82.3% built before 2000, median year 197737919ZIP 37917: 14,216 homes, 93.7% built before 2000, median year 194937917ZIP 37921: 12,969 homes, 78.7% built before 2000, median year 197837921ZIP 37909: 8,076 homes, 84.4% built before 2000, median year 198337909ZIP 37915: 3,722 homes, 65.2% built before 2000, median year 197737915ZIP 37916: 3,644 homes, 50.3% built before 2000, median year 200037916ZIP 37902: 1,908 homes, 69.8% built before 2000, median year 196837902ZIP 37912: 10,916 homes, 80.9% built before 2000, median year 197937912
  • under 20% built before 2000
  • 40 to 60%
  • 80% or more
  • Dot size = housing units. Red ring = ZIP 37912. Click a dot to open that ZIP.

Closest ZIP areas

ZIPMilesMedian builtPre-2000
379212.3 SW197878.7%
379174.1 E194993.7%
379094.7 SW198384.4%
379164.8 SE200050.3%
379024.9 SE196869.8%
379155.4 SE197765.2%

Distance is between Census ZIP centres.

Storm backdrop: Knox County

A ZIP is too small for its own hail record, so this is the county. FEMA’s National Risk Index rates Knox County Relatively Moderate overall (92.1 of 100), Relatively Low for hail (59.7), Relatively High for strong wind (89.3) and Relatively High for tornado (96.7). NOAA logged 48 hail reports in the county, on 22 days with hail of 1 inch or more in the full years 2014 to 2025.

FEMA National Risk Index, December 2025 version, county level. This product uses FEMA’s National Risk Index data but is not endorsed by FEMA.

Where to go from here

Other roofing cities near ZIP 37912: Cookeville, TN (85 miles), Asheville, NC (85 miles), Kingsport, TN (88 miles).

Questions

How old are the homes in ZIP 37912?

Of the 10,916 housing units, 5,691 (52.1%) were built before 1980, 8,831 (80.9%) before 2000 and 571 (5.2%) from 2010 on (Census ACS 2019 to 2023, survey estimate).

Does a house's age tell me how old its roof is in 37912?

No. ACS records the year the structure was built, not the year the roof was last replaced. With 5,691 units built before 1980 in this ZIP, many roofs are replacements rather than originals. Ask the seller for permit records or have a roofer inspect the roof.

Which nearby ZIP has the oldest housing?

Of the 6 closest ZIP areas we cover, 37917 (4.1 miles E) has the largest share built before 2000, 93.7%, against 80.9% in 37912.

Source: U.S. Census Bureau, American Community Survey 5-year estimates 2019 to 2023, tables B25034 (year structure built), B25035, B25003, B25024, B25077 and B19013, ZIP Code Tabulation Areas; ZIP-to-city assignment from the Census 2020 ZCTA-to-place relationship file (a ZIP is assigned to a city when more than half of its land area lies inside it). A ZCTA is not a USPS ZIP code: it approximates one and can differ at the edges. Public domain. The 12 ZIP-specific figures above differ from ZIP to ZIP.

Information only, not a roof inspection. Pickaroofer does not know the condition of any individual roof.