7 attribute fields, profiled from the January 2023 vintage.
Columns in Knox County
| Field | Type | Filled | Distinct | Example values |
|---|---|---|---|---|
| rnum | OFTString | 5.2k | R000012925, R000012743, R000002233 | |
| parcel_id | OFTString | 4.9k | R000012925, R000012743, R000002233 | |
| geoid | OFTString | 4.9k | 50019.00500.00100.330014, 51868.00100.00000.010004, 01100.00010.07004.000000 | |
| owner | OFTString | 2.2k | CJC FARMS, U S CELLULAR, DANIEL R C | |
| mail_addr | OFTString | 2.2k | JEFF STYLES 2701 CHERRY MTN LOOP FREDERICKSBURG, TX 78624, JANICE TOLSON 2727 CR 4011 BENJAMIN, TX 79505, 4911 FM 1756 W CROWELL, TX 79227 | |
| legal | OFTString | 4.8k | Acres: 53.090, ABST 19 SEC 14 SUB 9 D G BURNETT MUNDAY, Acres: 10.000, ABST 1868 BLK 4 SEC 4 DW RR TRUSCOTT, Acres: 1.900, BLK 49 LOT ALL ELANDEL TRUSCOTT | |
| situs | OFTString | 1.6k | Not Applicable, Not Applicable, Not Applicable |
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.