In 2023, Blawenburg, NJ had a population of 92 people with a median age of 62.8 and a median household income of $250,001. Between 2022 and 2023 the population of Blawenburg, NJ declined from 112 to 92, a −17.9% decrease and its median household income stayed from $250,001 to $250,001, a 0% change.
The 5 largest ethnic groups in Blawenburg, NJ are White (Non-Hispanic) (71.7%), Asian (Non-Hispanic) (28.3%), Black or African American (Non-Hispanic) (0%), American Indian & Alaska Native (Non-Hispanic) (0%), and Native Hawaiian & Other Pacific Islander (Non-Hispanic) (0%).
None of the households in Blawenburg, NJ reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Blawenburg, NJ are U.S. citizens.