Jefferson County land: flood, zoning and parcels
229,181 parcels
3.6% of Jefferson County’s 229,181 parcels are in a FEMA flood zone.
County roll 2026 · Map data Oct 26, 2026
- Acres on the roll534,906
- In a FEMA flood zone3.6%special flood hazard area
Property tax calendar
Colorado 2026 taxes: bills go out in January 2027; first half due March 1, 2027, second half June 15, 2027.
- First half
- March 1, 2027On the 2026 values; or pay the whole bill by April 30, 2027
- Second half
- June 15, 2027A late half accrues 1% interest a month
- Value protests
- To the assessor by June 8 (next working day when it falls on a weekend)Then to the county board of equalization
Free account: 25 parcel cards a day on the map, with watches and a saved search. Get started free
Around Jefferson County
Towns and census places in Jefferson County
- Lakewood52,638 parcels
- Arvada47,627 parcels
- Westminster (Jefferson County part)16,293 parcels
- Ken Caryl14,909 parcels
- Dakota Ridge13,101 parcels
- Wheat Ridge12,670 parcels
- Columbine8,964 parcels
- Golden6,656 parcels
All 23 places
- Evergreen5,256 parcels
- Fairmount4,052 parcels
- Applewood2,967 parcels
- Genesee1,947 parcels
- West Pleasant View1,629 parcels
- Edgewater1,607 parcels
- Coal Creek905 parcels
- Indian Hills902 parcels
- Littleton (Jefferson County part)884 parcels
- Kittredge692 parcels
- Aspen Park556 parcels
- Mountain View259 parcels
- Morrison204 parcels
- Idledale189 parcels
- East Pleasant View148 parcels
Flood zones and wetlands
Recorded flood claims in Jefferson County
Fewer than 10 insured flood claims were recorded in Jefferson County since 1978.
Land in Jefferson County by useLand use on the county roll
| Land class | Parcels | Share |
|---|---|---|
| Building on record | 209,274 | 91% |
| Other or not coded | 12,984 | 5.7% |
| Institutional | 5,531 | 2.4% |
| Farm and timber | 1,392 | 0.6% |
1,392 farm and timber parcels cover 51,889 acres. County tax roll 2026 (county service read 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 Jefferson County is 0.21 acre (213,211 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 Jefferson County is zonedThe most common districts
| Zoning district | Parcels | Share of zoned |
|---|---|---|
| P-D | 50,271 | 30% |
| Residential Neighborhood 7,500 (RN-7.5) | 17,597 | 11% |
| Planned Unit Devel. (PUD) | 15,745 | 9.4% |
| Planned Unit Development (PUD) | 11,584 | 6.9% |
| MR-1 | 7,775 | 4.6% |
| A-2 | 7,614 | 4.5% |
| Residential Neighborhood 6,000 (RN-6) | 6,258 | 3.7% |
| R-1A | 4,791 | 2.9% |
Zoning is on file for 73% of parcels in Jefferson County, across 108 districts. 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 Jefferson CountyFarm and timber parcels to start with
- 211.7 acres of farm and timber land
- 200.0 acres of farm and timber land
- 200.0 acres of farm and timber land
- 33980 Broce Ranch Trl 199.2 acres
- 181.2 acres of farm and timber land
- 180.0 acres of farm and timber land
- 180.0 acres of farm and timber land
- 177.7 acres of farm and timber land
Farm and timber parcels of an acre or more, each with its own page of public roll facts.
Questions about Jefferson County landAnswers from the public records
How many parcels are in Jefferson County, CO?
229,181 parcels on the 2026 Jefferson County tax roll (county service read Oct 2026), covering 534,906 acres.
How much vacant land is in Jefferson County, CO?
Jefferson County's vacant-land class failed our aerial check (14 of 60 sampled lots were in use or doubtful: yards, a school playground, an active quarry, landscape and highway strips), so we don't call any parcel here vacant land.
What is the typical lot size in Jefferson County?
The median parcel is 0.21 acre, from 213,211 parcels with a recorded size.
How much of Jefferson County is in a flood zone?
3.6% 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 Jefferson County?
0.6% of parcels are a quarter or more wetland on the USFWS National Wetlands Inventory, a mapping guide, not a legal delineation.
What is Jefferson County zoned?
Zoning is on file for 73% of parcels. The most common districts: P-D, Residential Neighborhood 7,500 (RN-7.5), Planned Unit Devel. (PUD).
Are there land prices for Jefferson County?
No land-price range is shown for Jefferson County yet. We print no land-price range for Jefferson County yet. Some parcel cards here carry their own price range or rough estimate.
Where does this data come from?
Parcels: State of Colorado public parcels (OIT) and county assessor layers. 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.
Sources & methodSources, dates and how these figures are built
Property tax due dates
Colorado Revised Statutes 39-10-104.5, 39-5-122 and 39-8-106. Checked Oct 13, 2026.
Recorded flood claims in Jefferson County
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.
What Groundwork can price in Jefferson County
Price range for a home with its land, or for land (tested on past sales; final check due Jun 2027): 152,181 parcels. Rough estimate for a home with its land, or for land: 43,219 parcels. Facts only: 1,728 parcels.
The card's own words; a card whose range covers a home with its land says “home + land”. Figures are on the card, never on this page.
Land sale prices
We hold this county's recorded deeds, but its file does not mark which sales are arm's-length land sales, so this page prints no land price range yet.
Sources
Parcels: State of Colorado public parcels (OIT) and county assessor layers (2026 roll, county service read Oct 2026); flood: FEMA National Flood Hazard Layer (as of Oct 2026); wetlands: USFWS National Wetlands Inventory (as of Oct 2026); sales: the county's own file, through Feb 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.