Median household income is a gauge of the overall economic health of the region and the financial resources of households.

In 2018-22, the median household income in MetroWest was $110,439, 13% higher than the median income in 2008-12 of $98,101 (after adjusting for inflation). In 2018-22, the state had a lower median household income at $96,505 and the nation was substantially lower, at $75,149. MetroWest's 13% increase since 2008-12 compares with an 14% increase at the state level and 11% increase at the national level.

Within MetroWest, median incomes were higher in Norfolk and Middlesex counties, at $120,621 and $121,304, than in Worcester County, at $88,524. Among local areas, Dover, Wellesley and Weston all had the highest median incomes, at $250,001, followed by Carlisle, at $247,656. Milford had the lowest median income at $92,843, followed by Marlborough at $94,199 and Framingham at $94,909.

Figures are in constant 2022 dollars. The multiyear figures are from the Census Bureau's American Community Survey. The bureau combined 5 years of responses to the survey to provide estimates for smaller geographic areas and increase the precision of its estimates. However, because the information came from a survey, the samples responding to the survey were not always large enough to produce reliable results, especially in small geographic areas. CGR has noted on data tables the estimates with relatively large margins of error. Estimates with 3 asterisks have the largest margins, plus or minus 50% or more of the estimate. Two asterisks mean plus or minus 35%-50%, and one asterisk means plus or minus 20%-35%. For all estimates, the confidence level is 90%, meaning there is 90% probability the true value (if the whole population were surveyed) would be within the margin of error (or confidence interval). The survey provides data on characteristics of the population that used to be collected only during the decennial census. Data for this indicator are released annually in December.