St. Mary Parish
Parcel & Property Data
About This Data
LandBrief holds 43,811 parcel records for St. Mary Parish, sourced from county records. Each includes the parcel boundary, and — where the county publishes them — owner, situs address, acreage, assessed values and legal description.
Data from the St. Mary Parish assessor roll dated June 2025, loaded August 2026. See data sources for every county’s vintage.
Explore St. Mary Parish
St. Mary Parish by the Numbers
- Median parcel size
- 0.22 acres
measured from mapped boundaries - 90th-percentile parcel
- 11.4 acres
- County land area
- 357,458 acres
U.S. Census measurement - Communities
- 13
37.1% of parcels outside any incorporated place - Median assessed value
- $1,410
100% of parcels carry a value
Who Owns St. Mary Parish?
Share of the county’s 43,811 parcels by the kind of owner on record. Classified from owner names, so the boundaries are approximate; an entity the rules cannot place counts as an individual.
| Owner type | Share of parcels |
|---|---|
| Individuals | 68.8% |
| Companies & organizations | 25.5% |
| Trusts & estates | 1.6% |
| Government | 3.0% |
| Other / unclassified | 1.1% |
The largest owner on record is MIAMI ALTERNATIVES LLC with 763 parcels — see the full landowner leaderboard.
Parcel Records (~43,811 total)
| Parcel ID | Owner | Address | City | Acreage | Market Value |
|---|---|---|---|---|---|
| 2115244003.00 | W L AND MARY B GRACE FAMILY CORP | — | Unincorporated | 2645.59 | $21,601 |
| 2354764052.00 | STERLING SUGARS LLC | — | Unincorporated | 1136.75 | $24,684 |
| 3434124001.00 | AVOCA LLC | — | Unincorporated | 890.07 | $14,552 |
| 2114604026.00 | UNITED STATES OF AMERICA | — | Unincorporated | 853.94 | $6,614 |
| 2593724003.00 | BELLE ISLE LLC | — | Unincorporated | 851.50 | $7,825 |
| 2234284005.00 | UNITED STATES OF AMERICA | — | Unincorporated | 805.77 | $6,185 |
| 3314044001.00 | AVOCA LLC | — | Unincorporated | 742.85 | $4,566 |
| 3434044002.00 | AVOCA LLC | — | Unincorporated | 694.13 | $11,289 |
| 1994124026.00 | MIAMI ALTERNATIVES LLC | — | Unincorporated | 682.32 | $2,110 |
| 3314124004.00 | AVOCA LLC | — | Unincorporated | 676.78 | $4,465 |
Download St. Mary Parish parcel data
All 43,811 parcels in St. Mary Parish as a single file — free, no account needed. Shapefile, GeoJSON, GeoPackage, CSV and Parquet.
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Frequently Asked Questions
How many parcels are in St. Mary Parish?
The St. Mary Parish assessor roll on file records 43,811 parcels across 13 communities, with 37.1% lying outside any incorporated place.
Who owns the most land in St. Mary Parish?
MIAMI ALTERNATIVES LLC holds 763 parcels, the most of any owner on record — the largest-landowners leaderboard ranks the top 25.
What is the typical parcel size in St. Mary Parish?
Measured from mapped boundaries, the median parcel is 0.22 acres, and nine parcels in ten are under 11.4 acres. Boundary-measured area closely tracks deeded acreage but is not the deed.
How much of St. Mary Parish is government-owned?
Government entities — federal, state, and local — hold 3.0% of the county’s parcels, classified from owner names on the roll.
How current is this data?
It comes from the St. Mary Parish assessor roll dated June 2025. Counties deliver on their own schedules; the methodology page explains how records are processed and the data sources page tracks every county’s vintage.
Browse by City (13)
43,811 parcels across 13 communities in St. Mary Parish.