Delmar is a very small town located in the state of Delaware. With a population of 2,178 people and two associated neighborhoods, Delmar is the 25th largest community in Delaware. Delmar has seen a significant amount of newer housing growth in recent years. Quite often, new home construction is the result of new residents moving in who are middle class or wealthier, attracted by jobs, a healthy local economy, or other amenities as they leave nearby or far away areas for greener pastures. This seems to be the case in Delmar, where the median household income is $55,625.00.

A relatively large number of people in Delmar telecommute to their jobs. Overall, about 8.40% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. 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.

Being a small town, Delmar does not have a public transit system used by locals to get to and from work.

In terms of college education, Delmar is nearly on par with the US average for all cities of 21.84%: 19.72% of adults 25 and older in Delmar have a bachelor's degree or advanced degree.

The per capita income in Delmar in 2018 was $25,221, which is low income relative to Delaware, and lower middle income relative to the rest of the US. This equates to an annual income of $100,884 for a family of four. However, Delmar contains both very wealthy and poor people as well.

Delmar is an extremely ethnically-diverse town. The people who call Delmar home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Delmar residents report their race to be White, followed by Black or African-American. Important ancestries of people in Delmar include English, Irish, German, Italian, and Scottish.

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