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Pastmaps lets you search for a place, open historical maps covering it, and compare them with today’s landscape using an opacity slider. Its official site says its collection includes more than 500,000 maps across the United States, the United Kingdom, and Ireland, spanning more than 200 years. That makes it a useful way to ask, “What did my neighborhood look like before it changed?”—but a map result is a research lead, not proof of a property’s exact age or a complete account of local history.
What Pastmaps does
Pastmaps is a browser-based historical mapping service. Search for a town, city, or other place, choose an available historical map, then compare it with the modern map beneath it by changing the historical layer’s opacity. The old and current views can be examined in the same geographic context, making changes to roads, waterways, settlements, and the built environment easier to spot.
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Pastmaps describes its collection as containing over 500,000 historical maps of the US, UK, and Ireland, with maps spanning 200+ years; the collection may include examples dating to the 1700s. These figures and coverage claims come from the company, and the site does not provide an independent audit of the collection. Pastmaps’ official website
The service also lists 3D terrain, satellite imagery, LiDAR, high-resolution downloads, and KMZ downloads for use in mapping tools such as Google Earth, Gaia GPS, Avenza, and CalTopo. Feature availability may depend on the account plan.
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How to look at an old map alongside today’s streets
- Open Pastmaps in a browser and search for the city or place you want to explore.
- Select the matching place from the suggestions, then browse the historical maps available for that area.
- Choose a map and use the opacity slider to fade between the historic image and the modern context. Look for features that persist across both layers as well as roads, buildings, waterways, or settlements that appear to have changed.
Map availability and detail vary by location. A search that works well for one town may return fewer or less detailed maps for another, so treat the map selection as a collection to explore rather than a guaranteed record for every address.
What you can use it for—and what it cannot establish
Pastmaps promotes uses including home and property history, genealogy, hiking and exploration, metal detecting, and research or education. For example, an older map may help you investigate where a former road or waterway ran, or whether a settlement or structure was shown in a particular period. The company also says high-resolution map downloads can be used in papers, presentations, and classrooms. These are suggested applications, not independently verified outcomes.
A historical map can show what its maker chose to depict at a particular time. It may omit small buildings, use imprecise boundaries, or reflect a date different from the one a reader assumes. Seeing a building on a map can provide a clue that it existed by the map’s date; not seeing one does not prove that it did not exist. To establish a home’s construction date or an ancestor’s exact address, use maps as one lead and corroborate it with appropriate records, such as deeds, directories, census material, or local archives.
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On the official page reviewed October 7, 2026, Pastmaps listed a free account at $0 with a limited number of maps each week and no credit card required. It listed Full Access at $1 per week when billed annually ($52 per year), or $9 per week on a pay-as-you-go basis. The company describes Full Access as including unlimited maps, high-resolution downloads, 3D terrain, LiDAR and satellite layers, and additional overlay tools. Prices and plan terms can change; check the current Pastmaps site before subscribing.
Pastmaps also offers a print shop for historical map prints, listed as starting at $29 on the page reviewed October 7, 2026. The displayed starting price is not a guarantee of the price for every map or print size.
How to judge what a map shows
- Check the map’s date and coverage. A map can represent a survey, publication, or revision date, and may not document every year in between.
- Compare recognizable landmarks. Streets, waterways, or other features that remain visible can help orient you, but old maps may not align perfectly with modern geography.
- Separate evidence from interpretation. A mapped road or structure is evidence that the map depicts it, not by itself proof of its exact location, condition, or history.
- Corroborate important claims. For property, family, or academic research, consult records relevant to the specific place and question rather than treating one map as definitive.
Who is likely to find Pastmaps useful?
Pastmaps is a good fit for a curious first look at how a familiar place may have changed, or for finding historical maps to pursue in more formal research. Its search-and-overlay workflow lowers the friction of comparing an old map with a modern landscape. The depth of what you can learn still depends on which maps exist for your area and on confirming important conclusions with other evidence.
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