County · code 08123
Weld CountyColorado
Weld County is a county in Colorado, with its seat in Greeley. It was created on November 1, 1861, by the Colorado Territory and named after Lewis Ledyard Weld.
- Founded1861
- County seatGreeley
- Named forLewis Ledyard Weld
- Land area3,985 sq mi + 32 sq mi water
- Population328,981 2020 Census
- Parcels mapped163,971 checked 16 October 2026
Where it is
Weld on the map of Colorado
Colorado has 64 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1861
An old deed may name a county that no longer exists, or a boundary that has since moved.
Weld was created by the Colorado Territory from non-county area on November 1, 1861. It was attached to Arapahoe County for judicial purposes in 1865, then fully organized and detached from Arapahoe in 1867. Over time, Weld lost territory to the creation of Washington County in 1887, Logan County in 1887, Morgan County in 1889, and Broomfield County in 2001.
- 1861Weld County created Weld created by Colorado Territory from non-county area. · Colo. Terr. Laws 1861, 1st sess., sec. 18/p. 55
- 1887Lost territory Weld lost to creation of Washington. · Colo. Laws 1887, 6th sess., pp. 251-254
- 1887
- 1889Lost territory Weld lost to creation of Morgan. · Colo. Laws 1889, 7th sess., S.B. 40, pp. 267-270
- 2001Lost territory Weld lost to creation of Broomfield. · Colo. Laws 2001, 63d sess., ch. 103, pp. 256-274
Show all 9 changes
- 1861Weld County created Weld created by Colorado Territory from non-county area. · Colo. Terr. Laws 1861, 1st sess., sec. 18/p. 55
- 1865Changed Weld attached to Arapahoe "for judicial purposes." · Colo. Terr. Laws 1865, 4th sess., sec. 15/p. 53
- 1867
- 1872Changed Legislature authorized creation of Platte (proposed) from Weld, subject to voter approval. Act repealed 9 February 1874; creation did not take effect.Platte· Colo. Terr. Laws 1872, 9th sess., pp. 80-81; Colo. Terr. Laws 1874, 10th sess., p. 82
- 1874Changed Law of 9 February 1872, authorizing creation of Platte (proposed) from Weld was repealed.Platte· Colo. Terr. Laws 1874, 10th sess., p. 82
- 1887Lost territory Weld lost to creation of Washington. · Colo. Laws 1887, 6th sess., pp. 251-254
- 1887
- 1889Lost territory Weld lost to creation of Morgan. · Colo. Laws 1889, 7th sess., S.B. 40, pp. 267-270
- 2001Lost territory Weld lost to creation of Broomfield. · Colo. Laws 2001, 63d sess., ch. 103, pp. 256-274
Land and parcels
What the maps cover in Weld
Who publishes each layer, how good it is, and when we last checked.
-
Parcels Good enough
Lot lines and tax-map numbers for 163,971 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 14 October 2026 · checked 16 October 2026 -
Address points Missing
No public address points layer found for Weld County yet.
-
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Weld by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Weld County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Weld County.
See your own lot on these maps
Open Weld County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Weld County
- When was Weld County founded?
- Weld County was founded in 1861, and named after Lewis Ledyard Weld.
- What is the county seat of Weld County?
- The county seat of Weld County is Greeley.
- Is there an online parcel map for Weld County?
- Yes. A public source publishes a parcel map of 163,971 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Weld County's boundary or name changed?
- Weld County was created in 1861. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving Arapahoe County, Platte County and Boulder County.
- Is my lot in a flood zone?
- We do not have flood maps for Weld County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby