Seneca is a very small town located in the state of Pennsylvania. With a population of 1,011 people and two associated neighborhoods, Seneca is the 829th largest community in Pennsylvania.

Telecommuters are a relatively large percentage of the workforce: 17.92% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The town is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Seneca has relatively fewer families with younger children, and/or college students. Combined, this makes Seneca a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

Seneca is a small town, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

The citizens of Seneca are slightly better educated than the national average of 21.84% for all cities and towns, with 22.11% of adults in Seneca having a bachelor's degree or advanced degree.

The per capita income in Seneca in 2018 was $32,226, which is middle income relative to Pennsylvania and the nation. This equates to an annual income of $128,904 for a family of four. However, Seneca contains both very wealthy and poor people as well.

The people who call Seneca home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Seneca residents report their race to be White, followed by Asian. Important ancestries of people in Seneca include German, Italian, English, Irish, and Dutch.

The most common language spoken in Seneca is English. Other important languages spoken here include Polish and Italian.