138 years in pictures
Census counts: 476 in 1920, 49 in 2020. The archive holds 6 old photos and papers going back to 2005 and 3 maps from 1948 on.
- 1888Seneca is settled
Each edition grades its towns against each other only.

A town settled in 1888, now home to 45 people.
No town among the 58 in Nebraska we compare has a lower median household income than Seneca. Seneca has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 476 in 1920, 49 in 2020. The archive holds 6 old photos and papers going back to 2005 and 3 maps from 1948 on.
Seneca is unincorporated, so Thomas County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
Ordered by what stands out in Seneca.
In July, afternoons reach 87°; in January, nights fall to 13°, and about 42 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
Seneca’s natural-hazard score from FEMA is 65 of 100, against 55 of 100 in Nebraska’s towns and 44 of 100 across U.S. towns. 47% of the town’s expected losses from natural hazards come from inland flooding, followed by hail at 15%.
FEMA National Risk Index · OpenFEMA
Just over a quarter of adults feel lonely in Seneca. Of the 58 Nebraska towns we compare, none has a higher share of adults who had a checkup this year than Seneca. In Seneca, 15% of adults have been diagnosed with depression, below both the Nebraska town median (18%) and the median of U.S. towns (23%).
| Seneca | Nebraska towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 11% | 14% | 17% |
| Depression (CDC PLACES) | 15% | 18% | 23% |
| Feel lonely (CDC PLACES) | 26% | 30% | 33% |
| High blood pressure (CDC PLACES) | 42% | 34% | 35% |
| What stands out | Seneca | NE |
|---|---|---|
| Fewer older adults who have lost all their teeth | 8.8% | 12.4% |
| Fewer adults facing housing insecurity | 7.1% | 9.5% |
| More adults who have had cancer | 12.6% | 8.3% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Seneca; the nearest are
About 0 of every 100 Seneca residents are enrolled in college, against 7 across Nebraska.
Unincorporated community in Blaine County, Nebraska, United States
Seneca is an unincorporated community in Thomas County, Nebraska in the Great Plains region of the United States. The population was 49 at the 2020 census. Seneca was established on the Chicago, Burlington and Quincy Railroad in 1888. The location of a division point on the railroad, it was for some years the largest settlement in Thomas County. The population dwindled following the closing of the railroad roundhouse. In 2014, after a dispute on the village board, the residents voted to disincorporate the village.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Seneca has fewer than 1,000 residents, too few for fair grades; the figures below are still real.