Erwin, TN land: flood and parcels
2,793 parcels
10% of Erwin’s 2,793 parcels are in a FEMA flood zone.
County roll 2026 · Map data Oct 17, 2026
- Acres on the roll1,162
- In a FEMA flood zone10%special flood hazard area
Tennessee 2026 county taxes: due since October 5; pay by the end of February 2027 to avoid interest.
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What land sells for in Unicoi County
Lots under 1 acre in Unicoi County sold for $15k–$42k a lot (13 sales, Oct 2025–Sep 2026).
| Size | Middle half | Median | Sales | Months |
|---|---|---|---|---|
| Lots under 1 acre | $15k–$42k a lot | $30k | 13 | Oct 2025–Sep 2026 |
| 1 to 10 acres | $23.5k–$34.0k an acre | $27k | 12 | Oct 2025–Sep 2026 |
| 10 acres or more | $4,700–$7,000 an acre | $5,700 | 12 | Oct 2025–Sep 2026 |
Our map has no zoning layer for Erwin yet. Ask the town's or Unicoi County's planning office which zoning applies to a parcel.
Around Erwin
Parcels to start with
Flood zones and wetlands
Recorded flood claims in Erwin
Fewer than 10 insured flood claims were recorded in and around Erwin since 1978.
People and new homes in Erwin
About 6,019 people live in Erwin, and 5 new homes were permitted in 2023.
- Population6,019July 2025 estimate, −0.7% since 2020
- Median household income$47,4872020–2024 average, ±$14,108
- New homes permitted52023, 5 single-family; 1 in 2021. 2023 is the latest full year it reported to the Census; 2025 is not on file for it
Land in Erwin by useLand use on the county roll
| Land class | Parcels | Share |
|---|---|---|
| Building on record | 2,438 | 87% |
| Other or not coded | 179 | 6.4% |
| Institutional | 174 | 6.2% |
| Farm and timber | 2 | 0.1% |
2 farm and timber parcels cover 58 acres. County tax roll 2026 (pulled Oct 2026); land class read from the roll's land-use and building fields.
Typical lot sizeThe typical lot, from the roll
The median parcel in Erwin is 0.56 acre (613 parcels with a size).
Acres from the county roll, or from the parcel's own outline where the roll's figure is off by more than three times. Condominium units that share one point (each carrying the whole complex's acres) are left out of the lot sizes.
Land parcels in ErwinLand and farm parcels to start with
Land and farm parcels of an acre or more, each with its own page of public roll facts.
Nearby townsTowns around it
Questions about Erwin landAnswers from the public records
How many parcels are in Erwin, TN?
2,793 parcels on the 2026 Unicoi County tax roll (pulled Oct 2026) inside the Census Bureau's boundary for Erwin, which can differ from its own limits at the edges, covering 1,162 acres.
Is vacancy verified in Erwin, TN?
Vacancy not verified: each parcel page says whether the county roll or building footprints show a building.
What is the typical lot size in Erwin?
The median parcel is 0.56 acre, from 613 parcels with a recorded size.
How much of Erwin is in a flood zone?
10% of parcels are in a FEMA special flood hazard area (National Flood Hazard Layer, as of Sep 2026). Check each parcel's own flood line before you buy.
Are there wetlands in Erwin?
0.9% of parcels are a quarter or more wetland on the USFWS National Wetlands Inventory, a mapping guide, not a legal delineation.
What is Erwin zoned?
Our map has no zoning layer for Erwin yet. Ask the town's or Unicoi County's planning office which zoning applies to a parcel.
Has land sold recently in Erwin?
Erwin has fewer than 10 clean land sales of its own of any one size in 36 months. The land-price bands on this page are its county's: 37 arm's-length single-parcel land sales from Oct 2025 to Sep 2026, from the county's own recorded sales.
What does land sell for in Erwin?
Erwin has fewer than 10 clean land sales of its own of any one size in 36 months, so these are Unicoi County's: lots under 1 acre in Unicoi County sold for $15k–$42k a lot (13 sales, Oct 2025–Sep 2026). That is the middle half of arm's-length single-parcel land sales; recorded sales, not an estimate of any parcel.
How many people live in Erwin?
About 6,019 (Census estimate for July 1, 2025), −0.7% since 2020.
How many new homes are being built in Erwin?
Building permits authorized 5 new housing units in 2023, the latest full year Erwin reported to the Census (2025 is not on file for it) (Census Building Permits Survey).
Where does this data come from?
Parcels: Tennessee Comptroller of the Treasury county parcel and assessment files. Flood: FEMA National Flood Hazard Layer. Wetlands: USFWS National Wetlands Inventory. Towns: U.S. Census places. Every figure is counted from those files on our map.
More in Unicoi CountyIts other towns
Sources & methodSources, dates and how these figures are built
Headline figures: source and date
Acres on the roll: County tax roll, 2026 roll, counted on our map built Oct 17, 2026.
In a FEMA flood zone: FEMA National Flood Hazard Layer, as of Sep 27, 2026; counted on our map built Oct 17, 2026.
Property tax due dates
Tennessee Code Annotated 67-1-701, 67-5-2010 and 67-1-404, as listed in the Comptroller of the Treasury’s assessment calendar. Checked Oct 20, 2026.
What land sells for in Unicoi County
Erwin has fewer than 10 clean land sales of its own of any one size in 36 months, so these are Unicoi County's.
The middle half (25th to 75th percentile) and the median of arm's-length single-parcel land sales. Each size uses its own months (the shortest of 12, 24 or 36 that holds enough sales), so the sizes' counts need not add up to another figure on this page. Source: the county's own recorded sales, arm's-length by the county's own flag. Recorded sales, not an estimate of any parcel.
Flood zones and wetlands: source and date
FEMA flood zone (A or V): FEMA National Flood Hazard Layer, as of Sep 27, 2026; counted on our map built Oct 17, 2026.
Parcels at least 25% wetland: USFWS National Wetlands Inventory, as of Oct 9, 2026; counted on our map built Oct 17, 2026.
Recorded flood claims in Erwin
FEMA counts claims on buildings with NFIP flood insurance, so land without an insured building never shows here. Claims counted from 1978 to Sep 2026.
Source: OpenFEMA NFIP Redacted Claims v3, as of Sep 2026.
Counted in the 5 census block groups that lie mostly inside Erwin, so the edges may reach past the town line.
People and new homes in Erwin
U.S. Census Bureau, Population Estimates Program, Vintage 2025 (May 2026); U.S. Census Bureau, American Community Survey 2020-2024 5-year (B19013) (Jan 2026); U.S. Census Bureau, Building Permits Survey (Sep 2026).
What Groundwork can price in Erwin
Facts only: no price estimate on any parcel here.
Sources
Parcels: Tennessee Comptroller of the Treasury county parcel and assessment files (2026 roll, pulled Oct 2026); flood: FEMA National Flood Hazard Layer (as of Sep 2026); wetlands: USFWS National Wetlands Inventory (as of Oct 2026); town limits: U.S. Census Bureau TIGER/Line places; sales: the county's own recorded sales, through Sep 2026; counted on our map built Oct 2026.
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data.