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Longitudinal Maryland County Crime Rates
Public Safety & Security
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Detailed statistics are provided on violent and property crimes across Maryland counties, offering a time series view spanning from 1975 to the present. The data includes core crime metrics such as murder, rape, robbery, aggravated assault, burglary (breaking and entering), larceny theft, and motor vehicle theft. This resource tracks the total number of crimes and provides various crime rates, calculated per 100,000 people, allowing for normalised comparison between jurisdictions. Furthermore, the dataset contains calculated year-over-year percentage changes for total crimes and specific crime rates, which supports robust trend analysis.
Columns
This dataset contains 38 columns, detailed below:
- JURISDICTION: County name in Maryland (String).
- YEAR: Year of the data (Integer).
- POPULATION: Population of the county (Integer).
- MURDER: Number of murders (Integer).
- RAPE: Number of rapes (Integer).
- ROBBERY: Number of robberies (Integer).
- AGG. ASSAULT: Number of aggravated assaults (Integer).
- B & E: Number of burglaries (breaking and entering) (Integer).
- LARCENY THEFT: Number of larceny thefts (Integer).
- M/V THEFT: Number of motor vehicle thefts (Integer).
- GRAND TOTAL: Total number of crimes (Integer).
- PERCENT CHANGE: Percent change in total crimes from the previous year (Float).
- VIOLENT CRIME TOTAL: Total number of violent crimes (Integer).
- VIOLENT CRIME PERCENT: Percent of violent crimes out of total crimes (Float).
- VIOLENT CRIME PERCENT CHANGE: Percent change in violent crimes from the previous year (Float).
- PROPERTY CRIME TOTALS: Total number of property crimes (Integer).
- PROPERTY CRIME PERCENT: Percent of property crimes out of total crimes (Float).
- PROPERTY CRIME PERCENT CHANGE: Percent change in property crimes from the previous year (Float).
- OVERALL CRIME RATE PER 100,000 PEOPLE: Crime rate per 100,000 people (Float).
- OVERALL PERCENT CHANGE PER 100,000 PEOPLE: Percent change in crime rate per 100,000 people from the previous year (Float).
- VIOLENT CRIME RATE PER 100,000 PEOPLE: Violent crime rate per 100,000 people (Float).
- VIOLENT CRIME RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in violent crime rate per 100,000 people from the previous year (Float).
- PROPERTY CRIME RATE PER 100,000 PEOPLE: Property crime rate per 100,000 people (Float).
- PROPERTY CRIME RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in property crime rate per 100,000 people from the previous year (Float).
- MURDER PER 100,000 PEOPLE: Murder rate per 100,000 people (Float).
- RAPE PER 100,000 PEOPLE: Rape rate per 100,000 people (Float).
- ROBBERY PER 100,000 PEOPLE: Robbery rate per 100,000 people (Float).
- AGG. ASSAULT PER 100,000 PEOPLE: Aggravated assault rate per 100,000 people (Float).
- B & E PER 100,000 PEOPLE: Burglary (breaking and entering) rate per 100,000 people (Float).
- LARCENY THEFT PER 100,000 PEOPLE: Larceny theft rate per 100,000 people (Float).
- M/V THEFT PER 100,000 PEOPLE: Motor vehicle theft rate per 100,000 people (Float).
- MURDER RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in murder rate per 100,000 people from the previous year (Float).
- RAPE RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in rape rate per 100,000 people from the previous year (Float).
- ROBBERY RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in robbery rate per 100,000 people from the previous year (Float).
- AGG. ASSAULT RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in aggravated assault rate per 100,000 people from the previous year (Float).
- B & E RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in burglary rate per 100,000 people from the previous year (Float).
- LARCENY THEFT RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in larceny theft rate per 100,000 people from the previous year (Float).
- M/V THEFT RATE PERCENT CHANGE PER 100,000 PEOPLE: Percent change in motor vehicle theft rate per 100,000 people from the previous year (Float).
Distribution
The dataset is structured with 38 columns and includes 1104 valid records. The typical data file format expected on a platform is CSV. The file size is approximately 216.91 kB.
Usage
This data is highly valuable for conducting temporal crime trend analysis and performing longitudinal studies focusing on specific crime categories. It is ideally suited for geospatial analysis to compare crime rates and patterns across Maryland counties. Potential use cases include calculating risk assessments, developing predictive models for crime incidence, and evaluating the historical effectiveness of safety and prevention policies.
Coverage
The geographic scope covers various counties within Maryland. The dataset provides historical data spanning a significant period, beginning in 1975 and extending through to the present year (with data points confirmed up to 2020). The demographic scope is covered by the annual population figures used in the crime rate calculations per 100,000 people.
License
CC0: Public Domain
Who Can Use It
- Researchers and Academics: For detailed statistical modelling, dissertation work, and historical crime analysis.
- Government Analysts: For informing public safety policy, tracking resource allocation, and monitoring long-term state and county safety metrics.
- Journalists and Data Visualizers: For reporting on public safety trends and generating comparative visualisations across jurisdictions.
- Urban Planners and Policy Makers: For understanding and addressing localised public safety challenges.
Dataset Name Suggestions
- Maryland County Historical Crime Statistics (1975-Present)
- Violent and Property Crime Data by Maryland Jurisdiction
- Longitudinal Maryland County Crime Rates
- MSAC Annual Crime Reports Data (County Level)
Attributes
Original Data Source: Longitudinal Maryland County Crime Rates
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