Blog · October 14, 2026 · Colorado
The Longmont GIS Map and the county parcel viewer
Most property questions near Erie start with a parcel lookup.
Main page: Weld County, CO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When land near Erie catches your eye, the Longmont GIS map shows lines, owner names and parcel numbers. This Longmont guide covers: which viewer to open, how to search it, and what to double-check with records.
Opening the Longmont GIS map
With a lot near Mead, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
The viewer Weld County publishes
Go first to the Weld County parcel viewer; it maps each tax parcel around Dacono and Berthoud. In and around Dacono, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. Out toward Firestone, a pop-up or side panel typically gives the owner of record, assessed acreage, a parcel ID and sometimes recent sales.
Browser tips
When the map won't open around Firestone, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
Saving what you find
Print or screenshot the parcel near Berthoud with its ID visible, so you have it when calling an office.
Longmont and the county around it
Longmont sits in Weld County, Colorado, and the county assessor maps its lots. For a home near Firestone, city or town hall handles matters such as zoning, permits and utilities inside its limits, while the county keeps the tax map. Lots just outside the town limits out by Berthoud often answers to county rules, not municipal ones.
Land on the county line
Weld County touches Adams County, Boulder County, Broomfield County, Larimer County, and Logan County, and each of those keeps its own parcel map. A tract near the line by Dacono may be split across two assessors' files, so look at the neighboring map too. For acreage around Erie, our state page lists every neighboring county map across Colorado.
On site with the map
The parcel map usually runs in a mobile browser, useful out on a road near Firestone, though signal can drop in rural spots. A printout of the tract near Erie is a good backup.
Getting your bearings
Greeley serves as the county seat, which is where the courthouse records live. You'll also find Mead, Frederick, Firestone, and Erie, where town lots give way to larger tracts. Roughly 359,442 people call Weld County home (Census Bureau estimate, 2023) spread over about 3,985 square miles. Weld County dates to 1861, and some chains of title near Dacono are long. Places such as Pawnee National Grassland make handy reference points on the map near Berthoud.
Reading the legal description
Colorado uses the Public Land Survey System, so rural legal descriptions near Dacono cite section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though real sections near Berthoud vary in size. Keep the legal description for land near Berthoud before you request a deed or survey.
Recorded documents worth pulling
Before you sign anything, pull the recorded deed from the County Clerk and Recorder; the parcel map near Erie only summarizes it. In and around Berthoud, have ready the instrument number listed on the parcel record and the lookup takes minutes.
Three ways to find a parcel
By address works best for lots in Longmont; owner names are usually entered last name first. With a lot near Mead, searching by parcel number never misses, and you'll find it on tax statements.
Offices that can help
If the acreage or value on a parcel near Berthoud looks off belong with the County Assessor, since that office keeps the assessment data. Building or septic questions for a lot near Mead are for the local planning and health departments, town or county, depending on location.
Beyond the parcel lines
Out toward Berthoud, layer lists often include zoning, flood zones, city limits, school districts or contours; not every viewer has them all.
Limits of the parcel data
Listed acreage is an assessed number; only a licensed surveyor can set the real boundary for a parcel near Mead. For acreage around Dacono, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Reading a parcel record
Sales history, if listed, helps with pricing around Erie are a useful starting point; they're not an appraisal.
Longmont: common questions
Do I need an account for the parcel map near Firestone?
The Weld County parcel viewer is free and opens without a login.
Can I use the Longmont GIS map for a fence near Firestone?
Short answer: lines near Firestone can be off by several feet or more, so a licensed surveyor should mark corners.
Can I look up a property owner on the map near Mead?
In most cases, the parcel record for a lot near Frederick lists the owner of record; try variations if nothing comes up.
Does Longmont have its own GIS map?
In most cases, Longmont may publish zoning or utility maps separately, while parcel data usually comes from the county.
How do I save a parcel from the viewer near Erie?
Most viewers have a print or export tool, and it's worth keeping the parcel ID visible for land near Berthoud.
Open the official Weld County, CO parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.