Maryland COVID-19 Confirmed Deaths by County, Cumulative Daily Counts

Weekly updated cumulative counts of confirmed COVID-19 deaths among Maryland residents, reported by the state's Vital Statistics Administration. The dataset covers all 24 Maryland jurisdictions and the city of Baltimore, with daily records until updates ceased in October 2025. Data is provided by opendata.maryland.gov and was last updated on the platform in May 2026.

Use Cases

• Analyze temporal trends in COVID-19 mortality by plotting cumulative deaths over time using the DATE column for each county column.
• Compare the impact of COVID-19 across Maryland jurisdictions by aggregating death counts from columns like Montgomery, Prince_Georges, and Baltimore_City.
• Identify counties with unknown death attribution by examining the Unknown column in relation to specific county totals.
• Calculate weekly or monthly death rates by differencing cumulative values in county columns (e.g., Talbot, Worcester) between DATE entries.

Strengths

• Covers all 24 Maryland counties and Baltimore City, as indicated by the 26 column names.
• Provides a DATE column for time-series analysis of cumulative deaths.
• Explicitly distinguishes confirmed deaths from probable deaths, as noted in the description.

Limitations

• Dataset was deprecated and ceased updates in October 2025, limiting analysis to historical periods.
• Row count and total number of data points are unknown, which may complicate suitability assessment.
• Some death data may be incomplete due to reporting lags, as acknowledged in the description.

Provenance

Source

State of Maryland, Vital Statistics Administration, via opendata.maryland.gov.

Collection Method

Daily (later weekly) collection of laboratory-confirmed COVID-19 deaths from death certificates.

Time Range

From the start of the pandemic until updates ceased in October 2025.

Freshness

Last platform update was 2026-05-13, but data collection stopped in October 2025.

Geography

State of Maryland, United States, with county-level granularity.