Decatur, IL land: flood, zoning and parcels
34,872 parcels
On the county tax roll
- Acres on the roll22,979
- In a FEMA flood zone4.3%special flood hazard area
Illinois 2026 taxes are billed in 2027: the first installment is due no earlier than June 1, 2027.
Sources: Illinois Property Tax Code 35 ILCS 200/21-15, 35 ILCS 200/21-25, 35 ILCS 200/21-30 and 35 ILCS 200/16-55. Checked Oct 13, 2026.
Free account: 25 parcel cards a day on the map, with sale history, road access and elevation. Get started free
What land sells for in Decatur
Land here sold for $10.1k–$27.5k a lot (10 sales, Oct 2024–Sep 2026)
| Size | Middle half | Median | Sales | Months |
|---|---|---|---|---|
| Lots under 1 acre | $10.1k–$27.5k a lot | $16.5k | 10 | Oct 2024–Sep 2026 |
The middle half (25th to 75th percentile) and the median of arm's-length single-parcel land sales. Source: Illinois Department of Revenue PTAX-203 declarations, land or farm at the sale, screen S1. Recorded sales, not an estimate of any parcel.
Around Decatur
Parcels to start with
Flood zones and wetlands
Recorded flood claims in Decatur
93 insured flood claims were recorded in and around Decatur from 1978 to Sep 2026; 34% were on buildings rated outside the mapped flood zone (zone X, B or C). The busiest year was 1983, with 15 claims. FEMA paid $646,000 on them in total.
| Years | Claims |
|---|---|
| 1978–79 | 14 |
| 1980–89 | 32 |
| 1990–99 | 16 |
| 2000–09 | 22 |
| 2010–19 | Fewer than 10 |
| 2020–26 | Fewer than 10 |
Area statistics for buildings with NFIP flood insurance, not any one parcel: a lot that never had an insured building has no claims to count. OpenFEMA NFIP Redacted Claims v3, as of Sep 2026.
What flood insurance costs in Decatur
What NFIP policyholders in and around Decatur pay a year for a single-family home, by flood zone: the middle half of premiums on policies that took effect Sep 2025–Sep 2026. It is what insured homes here pay, not a quote for any one building.
| Flood zone | Policies | Middle half | Full-risk median |
|---|---|---|---|
| A zones (special flood hazard area) | 29 | $1,010–$1,900 | $2,170 |
| X zone (outside the mapped flood zone) | Fewer than 10 | Not shown | Not shown |
Full-risk premium: the median of FEMA's own full-risk premium for the same policies (Risk Rating 2.0). A discounted policy rises toward it a step each year, within the law's cap on yearly increases. Zones are the flood zone each policy is rated in. OpenFEMA NFIP Redacted Policies v3, as of Sep 2026.
Counted in the 70 census block groups that lie mostly inside Decatur, so the edges may reach past the town line. 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.
People and new homes in Decatur
- Population67,884July 2025 estimate, −4.7% since 2020
- Median household income$51,5922020–2024 average, ±$2,061
- New homes permitted32025, 3 single-family; 8 in 2021
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).
Illinois land market report · Illinois land prices by quarter
Land in Decatur by useLand use on the county roll
| Land class | Parcels | Share |
|---|---|---|
| Building on record | 29,355 | 84% |
| Other or not coded | 2,950 | 8.5% |
| Institutional | 2,471 | 7.1% |
| Farm and timber | 91 | 0.3% |
| Residential lot | 5 | under 0.1% |
91 farm and timber parcels cover 2,274 acres. County tax roll, as of 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 Decatur is 0.18 acre (34,324 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.
How Decatur is zonedThe most common districts
| Zoning district | Parcels | Share of zoned |
|---|---|---|
| MUNICIPAL | 34,839 | 100% |
| R-1 | 16 | under 0.1% |
| M-1 | 3 | under 0.1% |
| R-4 | 2 | under 0.1% |
| M-2 | 2 | under 0.1% |
| B-2 | 2 | under 0.1% |
| R-2 | 1 | under 0.1% |
| A-1 | 1 | under 0.1% |
Zoning is on file for 100% of parcels in Decatur, across 8 districts (zoning maps as of Oct 2026). A district shown by its code alone has no published name on our map. The town or county zoning office has the final word on any parcel.
Land parcels in DecaturFarm and timber parcels to start with
- 17.5 acres of farm and timber land
- 4025 E Boyd Rd 16.4 acres
- 16.2 acres of farm and timber land
- 15.4 acres of farm and timber land
- 13.9 acres of farm and timber land
- 3211 N Brush College Rd 13.3 acres
- 13.0 acres of farm and timber land
- 1717 E Garfield Ave 12.1 acres
- 246 S Hillcrest Blvd00000 11.3 acres
Farm and timber parcels of an acre or more, each with its own page of public roll facts.
Nearby townsTowns around it
Questions about Decatur landAnswers from the public records
How many parcels are in Decatur, IL?
34,872 parcels on the Macon County parcel layer (pulled Oct 2026), covering 22,979 acres.
Is vacancy verified in Decatur, IL?
Vacancy not verified: each parcel page says whether the county roll or building footprints show a building.
What is the typical lot size in Decatur?
The median parcel is 0.18 acre, from 34,324 parcels with a recorded size.
How much of Decatur is in a flood zone?
4.3% of parcels are in a FEMA special flood hazard area (National Flood Hazard Layer, as of Oct 2026). Check each parcel's own flood line before you buy.
Are there wetlands in Decatur?
0.5% of parcels are a quarter or more wetland on the USFWS National Wetlands Inventory, a mapping guide, not a legal delineation.
What is Decatur zoned?
Zoning is on file for 100% of parcels (zoning maps as of Oct 2026). The most common districts: MUNICIPAL, R-1, M-1.
How many people live in Decatur?
About 67,884 (Census estimate for July 1, 2025), −4.7% since 2020.
How many new homes are being built in Decatur?
Building permits authorized 3 new housing units in 2025 (Census Building Permits Survey).
Where does this data come from?
Parcels: Macon County parcels: Macon County, Illinois (layer as of Oct 2026). 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 Macon CountyIts other towns
About these numbersSources, dates and how these figures are built
Sources
Parcels: Macon County parcels: Macon County, Illinois (layer as of Oct 2026) (pulled Oct 2026); flood: FEMA National Flood Hazard Layer (as of Oct 2026); wetlands: USFWS National Wetlands Inventory (as of Oct 2026); town limits: U.S. Census Bureau TIGER/Line places; sales: the county's own file, through Sep 2026; counted on our map built Oct 2026.