Map layers are provided for general use only and are not guaranteed to be correct or complete. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.
Median Age: shows the relative ages of the population living in any given place in the United States (incl. Puerto Rico) according to the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a dot density map, where one dot = one person. Each dot is randomly placed within a census block group and is colored according to age group. Lower zoom levels are shown as a graduated symbol map where the dot size is related to the total number of people within the given geography. The interactive hover displays the median age of the given geography, the total number of people residing in that geography, the associated population density, and a graph showing the distribution of people among age groups in that geography. There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
We recommend using the Nighttime map style with this layer.
Percent married: shows the percent of the population that describes themselves as married according to the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography. There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Singles who live alone: on high zoom levels this map places a dot randomly for each single (i.e., describes themself as not currently married) person between the ages of 18-64 who lives alone within a given census tract. The data comes from the 5-year average (2008-2012) American Community Surveyi. The dots are colored by sex: blue for men, pink for women. Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography. There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
We recommend using the Nighttime map style with this layer.
Percent College Degree: shows the percent of the population who have completed a 4 year university or the equivalent. The data comes from the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Length of Commute: shows the percent of the population with a commute of 30 minutes or more. Commute patterns are highly variable but are often tied to freeway access, traffic, access to public transit, and proximity to jobs. The data comes from the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Commute by Transit: shows the percent of the population that commutes to work by public transit. Areas with a high percentage are well served by public transit. Conversely, those that are low are mostly dependent upon automobiles. The data comes from the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Owners versus Renters: on high zoom levels this map shows one dot for each owner or renter placed randomly within a census block group. Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
We recommend using the Nighttime map style with this layer.
Multi Unit Buildings: shows the percent of households that are multiunit. The data comes from the 5-year average (2008-2012) American Community Surveyi. On higher zoom levels, the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Year of Construction: shows the median year that homes were built in a given geography, back to 1939. The data comes from the 5-year average (2008-2012) American Community Surveyi. At higher zoom levels the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Year of move in: shows the median year of occupation in a given geography. Groupings of similar move in years indicate whether a community is well established, transient, or in transition between the two. The data comes from the 5-year average (2008-2012) American Community Surveyi. At higher zoom levels the map is rendered as a choropleth (also known as a heatmap). Lower zoom levels are shown as a graduated symbol map where the dot size related to the total number of people within the given geography.There are a few known issues, including census geography not lining up perfectly with Google maps, dots in parks and other areas we couldn't easily mask out, and some variability within the ACS survey itself.
Data and Acknowledgments:
Read more about this data on the
American Community Survey site, including sample questions from the
2012 ACS Questionnaire.