The southern anchor of the St. Louis metropolitan area and the second-largest county in the metro by parcel count. Jefferson County is home to Arnold, Festus, Crystal City, Hillsboro, De Soto, Imperial, and Pevely — and to 1804 Cairo Drive in Festus, the largest local management hub in the entire county at 52 distinct entities operating from a single mailing address.
Important data availability note: The Jefferson County public parcel layer does not expose assessed or appraised values. This report's concentration analysis is based on ownership patterns, entity density, mailing-address co-location, absentee/out-of-state ownership signals, vacant land flags, ownership tenure (deed dates), lot size, and property class. Value-weighted analysis is not available for Jefferson County. The clustering, entity rosters, and operator mapping are identical in detail to NPA's other county reports.
Jefferson County's data reveals a unique pattern: the largest cluster in the entire county is a local Festus management hub, not an out-of-state institutional operator. But Jefferson is also home to the same Texas, Georgia, and Arizona institutional operators visible across NPA's other Missouri counties — confirming that the southern St. Louis metro is on the institutional SFR map.
1804 Cairo Drive, Festus: 52 entities, 60 parcels. The largest cluster in Jefferson County and one of the most striking local-operator findings in the entire NPA catalog. 52 distinct entity names operating from a single Festus mailing address, controlling 60 parcels. The near 1:1 entity-to-parcel ratio is the signature of pure asset structuring — each property held in its own LLC for liability isolation. This is the largest local management hub in Jefferson County by a wide margin and represents a sophisticated multi-entity operator running an entire portfolio through individual LLCs.
17415 N Outer 40 Rd, Chesterfield: 25 entities, 317 parcels. The highest-volume cross-county footprint. 25 entities operating from a single Chesterfield (St. Louis County) office address, holding 317 Jefferson County parcels. The 12.7 parcels-per-entity ratio is the signature of a property management firm aggregating multiple investor portfolios under shared operational infrastructure. Critical finding for any investor or lender tracking cross-county operator footprints.
5001 Plaza on the Lake, Austin Texas: 20 entities, 103 parcels, 100% absentee. The same Austin, Texas institutional operator visible in NPA's Jackson County and Platte County reports — now confirmed in Jefferson County with 20 distinct LLC names and 103 parcels. The 100% absentee designation confirms every parcel is held remotely with no Missouri operational presence. Together with the Jackson and Platte footprints, this is a clear regional institutional SFR pattern targeting the Missouri side of the I-70 and I-44 corridors.
600 Galleria Parkway, Atlanta Georgia: 17 entities, 64 parcels. A Georgia institutional operator with 17 distinct LLC names holding 64 Jefferson County parcels. Together with the Austin Texas cluster and the Scottsdale Arizona PO Box (also visible here at 15 entities / 27 parcels), this confirms three major out-of-state institutional capital pools have positions in Jefferson County's housing market.
PO Box 544, Fenton: 20 entities, 99 parcels. Another cross-county Missouri operator — this one Fenton-based (St. Louis County) with 20 LLCs holding 99 Jefferson County parcels. Together with the Chesterfield cluster, this confirms a clear south-bound investment flow from the suburban St. Louis County office corridor into Jefferson County rental markets.
A complete county intelligence package — PDF report and companion CSV — delivered as instant digital downloads.
Executive dashboard, geographic treemap (parcel-count weighted), scatter analysis (entity vs. parcel count), municipality breakdown across Arnold, Festus, Hillsboro, and De Soto, top 25 clusters by two ranking methods, entity rosters for the 22 largest clusters, CSV quick-start guide, full methodology, and legal disclaimer.
16 columns of structured data covering every entity in every cluster. Filter by Jefferson County municipality, owner state, or distress score for custom analysis. Built from the SKjeffcomo Tax_Parcels FeatureServer (Jefferson County Assessor's official ArcGIS Online account).
Identify which operators dominate the Jefferson County rental and investment markets. Critical for any investor evaluating Festus, Arnold, or De Soto submarkets.
Cross-reference STL County borrowers against Jefferson County clusters to map cross-county investor footprints. The Chesterfield and Fenton operators are major cross-county players.
Recognize when Jefferson County buyer or seller entities trace back to institutional operators in Austin TX, Atlanta GA, Scottsdale AZ, or the Festus 1804 Cairo Dr local hub.
Identify the out-of-state SFR operators (Texas, Georgia, Arizona) and STL County office-based operators (Chesterfield, Fenton) who need local Jefferson County management partners.
The report is generated from the SKjeffcomo Tax_Parcels FeatureServer published by the Jefferson County Assessor's official ArcGIS Online account, accessed via ArcGIS REST. Owner names and mailing addresses are normalized using NPA's multi-pass methodology, then clustered by mailing address (3+ distinct entities at one address). The Jefferson County source feed includes ownership, mailing addresses, deed records, property class, and acreage — but does NOT include assessed or appraised values for the full county. The report's concentration analysis works without value data; the headline "$X.XB clustered value" stat is omitted, value columns are suppressed in the top-25 tables, and the scatter plot uses parcel count on the vertical axis instead of appraised value. The ownership tenure distress signal IS enabled via deed recording dates. Year-built data is not available, so the pre-1950 building distress signal is disabled. For complete methodology details, see the methodology page.
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