JB PARCELBoulder County, Colorado: parcel data and property records
130,165 Boulder County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by absentee ownership, acreage and owner tenure.
What the data covers
These bars show real field-by-field coverage for Boulder County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Boulder County: land or improvement value, deeded acreage and vacancy. Those fields are carried where the county publishes them.
On fewer than 5 percent of Boulder County parcels: year built.
Most recent recorded sale on file: 2026-03-16.
Areas covered
Parcel counts by place, largest first: Longmont (34,404), Boulder (33,942), Unincorporated (26,875), Lafayette (11,506), Louisville (8,404).
Search Boulder County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Boulder County map See plans
Common questions
How many parcels are in Boulder County, Colorado?
JB PARCEL carries 130,165 parcel records for Boulder County, Colorado, with owner information on 99 percent of them.
Can I find out who owns a property in Boulder County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales and lot lines on the map. Sale records here currently run through 2026-03-16.
How do I find vacant land or absentee owners in Boulder County?
We do not hold vacancy data for Boulder County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Boulder County does have owner mailing state: 8,315 parcels have an owner mailing address outside Colorado.
Can I search Boulder County by lot size or acreage?
Yes. Acreage is on 87 percent of Boulder County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.