10 attribute fields, profiled from the December 2017 vintage.
Columns in Logan County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| PARCEL_ID | OFTString | 8.4k | 01 100090000, 01 1006200006001, 01 100680013 | |
| MAPID | OFTString | 6.9k | 01 0009 0000 0000, 01 0068 0013 0000, 01 0068 0014 0000 | |
| OWNER | OFTString | 5.5k | MULLINS JACK, HENSLEY GARY ANGELA ATT:ESCROW REPORTING, HENSLEY ANGELA | |
| MAIL_ADDR | OFTString | 4.9k | P O BOX 626 CHAPMANVILLE WV 25508, 1 CORELOGIC DRIVE DRW 4-3 WESTLAKE TX 76262, PO BOX 1413 CHAPMANVILLE WV 25508 | |
| LEGAL | OFTString | 7.4k | PT TRACT 1 A G CHAPMAN EST 50 FT FRT 1.1 ACRES (FEE), FEE: LOT 5B ALBERT CHAPMAN EST ).137 AC CHAPMANVILLE, FEE: LOT 5C ALBERT CHAPMAN EST (0.168 AC) CHAPMANVILLE | |
| SITUS | OFTString | 2.3k | RT 10, CHAPMANVILLE, CHAPMANVILLE | |
| DISTRICT | OFTString | 9 | 01 - CHAPMANVILLE CORP, 01 - CHAPMANVILLE CORP, 01 - CHAPMANVILLE CORP | |
| ACREAGE | OFTString | 8.8k | 1.18285753307, 9.04846708446, 0.160208666684 | |
| OLD_OWNER | OFTString | 5.6k | MULLINS, JACK, DENT, THOMAS & CALLIE, HENSLEY, GARY & ANGELA | |
| APN | OFTString | 8.4k | 01 100090000, 01 1006200006001, 01 100680013 |
Why this differs from the next county over
There is no national parcel schema. Every assessor's office built its own, usually decades ago, usually inside whatever CAMA system it bought at the time. One county's owner column is OWNER_NAME, the next one's is own1, and a third splits it across four fields. Shapefile's ten-character DBF limit truncated a generation of them into things like TOTLNDVAL.
Nothing here is renamed or remapped. The columns above are exactly what is in the file, because a normalisation layer that quietly guesses wrong is worse than no normalisation at all — and every guess it makes is one you cannot audit.
The Filled column is the share of rows with a real value. Placeholder text such as n/a counts as empty; a column that is 100% present but 90% placeholder is a column that will disappoint you, and the profiler treats it accordingly.