In 2023, the real gross domestic product (GDP) of Massachusetts increased by roughly 1.2 percent compared to the previous year. The state's GDP experienced the most growth in 2000, when it increased by 8.1 percent when compared to the previous year.

The variables contained in the data sets are primarily concerned with perinatal outcomes and maternal health. A number of variables with respect to the social and economic status of the mothers and their families were also included (ie. Occupation, Marital status, Region). While all nine data sets are centered around these common themes and hold many variables in common, each data set has a unique combination of variables. The types of fields are wide-ranging but are primarily concerned with infant birth, maternal health, and socioeconomic status. The clinical records of the Boston Lying-in inpatient and outpatient services, and those of the New England Hospital maternity unit, are housed in the Rare Book Room, Francis A. Countway Library of Medicine, Harvard University, Boston, Massachusetts. While the information found in these records varied somewhat from one hospital to the next, each set of records was consistent throughout the period under review. Four data bases were established, one consisting exclusively of white patients for each of the three clinics and one composed of all black patients from both services of the Boston Lying-in. The four sample populations were constituted in the following ways. The clinical records of the New England Hospital’s maternity clinic exist in continuous series from 1872 to 1900. All births were recorded because there were fewer than 200 deliveries annually. The patient registers of the Boston Lying-in inpatient service span the years 1886-1900, with a gap in 1893 and 1894. A random sample of 200 cases was chosen for each year. The same procedure was followed at the outpatient clinic, whose case files extend from 1884 to 1900, excepting those years in which all were recorded because fewer births occurred, and a short period when all cases were noted even though they totaled more than 200. Because the number of black patients was small, and because the birth weight experience of blacks was distinctive in some important respects, a fourth file was created consisting of all blacks in the Lying-in inpatient and outpatient records. The preliminary data bases consisted of 3480, 2503, 3654, and 373 cases, respectively. The birth weight means in the Lying-in inpatient sample are accurate to 79 grams, and those of the outpatient clinic sample to 65 grams, at the 95 percent confidence level.

The gross domestic product (GDP) of the Greater Boston metro area has increased significantly since 2001. In 2022, the area's GDP amounted to 504.1 billion chained 2017 U.S. dollars, compared to 284.1 billion U.S. dollars in 2001.

United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: NO2 data was reported at 29.000 Index in 31 Dec 2024. This records an increase from the previous number of 24.000 Index for 30 Dec 2024. United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: NO2 data is updated daily, averaging 25.000 Index from Jan 1980 (Median) to 31 Dec 2024, with 16270 observations. The data reached an all-time high of 76.000 Index in 02 Dec 2018 and a record low of 5.000 Index in 03 Jun 2023. United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: NO2 data remains active status in CEIC and is reported by United States Environmental Protection Agency. The data is categorized under Global Database’s United States – Table US.ESG.E001: Air Quality Index and Air Pollutants. [COVID-19-IMPACT]

United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: PM2.5 data was reported at 29.000 Index in 11 May 2025. This records an increase from the previous number of 18.000 Index for 10 May 2025. United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: PM2.5 data is updated daily, averaging 40.000 Index from Jan 1999 (Median) to 11 May 2025, with 9512 observations. The data reached an all-time high of 1,513.000 Index in 10 Nov 2024 and a record low of 7.000 Index in 05 May 2016. United States AQI: Massachusetts-New Hampshire: Boston-Cambridge-Newton: PM2.5 data remains active status in CEIC and is reported by United States Environmental Protection Agency. The data is categorized under Global Database’s United States – Table US.ESG.E001: Air Quality Index and Air Pollutants. [COVID-19-IMPACT]

Graph and download economic data for Unemployment Rate in Boston-Cambridge-Nashua, MA-NH (NECTA) (BOST625URN) from Jan 1990 to Dec 2024 about Boston, NH, MA, unemployment, rate, and USA.

Graph and download economic data for All Employees: Retail Trade in Boston-Cambridge-Newton, MA (NECTA Division) (SMU25716544200000001SA) from Jan 1990 to Dec 2024 about Boston, MA, retail trade, sales, retail, employment, and USA.

Graph and download economic data for Housing Inventory: Median Days on Market in Boston-Cambridge-Newton, MA-NH (CBSA) (MEDDAYONMAR14460) from Jul 2016 to May 2025 about Boston, NH, MA, median, and USA.

Graph and download economic data for Consumer Price Index for All Urban Consumers: Food in Boston-Cambridge-Newton, MA-NH (CBSA) (CUURA103SAF1) from Dec 1914 to May 2025 about Boston, ME, NH, CT, MA, urban, food, consumer, CPI, inflation, price index, indexes, price, and USA.

Graph and download economic data for Median Household Income in Massachusetts (MEHOINUSMAA646N) from 1984 to 2023 about MA, households, median, income, and USA.