Juniata County stretches across central Pennsylvania as a long, narrow county shaped by parallel ridges, creek valleys, and the Juniata River corridor. Mifflintown is the county seat and sits close to Mifflin, while Port Royal, Mexico, Thompsontown, McAlisterville, Richfield, and East Waterford occupy separate sections of the valley system. U.S. 22 and U.S. 322 provide the strongest regional road references, with PA 35, PA 74, PA 75, PA 235, PA 333, and PA 850 reaching smaller communities. The four original A3 high-resolution JPG maps are available in the download box below.
The terrain becomes much easier to understand when the low river corridor is separated from the surrounding ridges. East Licking Creek and Tuscarora Creek occupy long southwestern and central valleys, while Lost Creek, Little Lost Creek, and Cocolamus Creek drain the northern and northeastern interior. The supplied elevation map ranges from about 117 to 678 meters, with a mean near 262 meters, so the contrast between valley floors and ridge crests is unusually clear.
Table of Contents
Mifflintown and Mifflin anchor the central Juniata River corridor
Mifflintown is the best starting point on the general reference map. The county seat lies very close to Mifflin and near the U.S. 22–322 corridor, while PA 35 and PA 333 provide additional connections through the central county. Mexico lies just to the east, and Thompsontown is farther downstream along the same broad valley.
The central settlement pattern follows the river corridor rather than spreading evenly across the hills. Port Royal sits close to the Juniata River southeast of Mifflintown, while local roads and bridges connect boroughs that are separated by short ridges and tributary valleys.
Northeast of Mifflintown, PA 35 and PA 235 reach McAlisterville and the Richfield side. To the southwest, PA 35 and PA 75 extend toward East Waterford through narrower mountain valleys. The road system repeatedly uses lower corridors because long ridges restrict direct cross-county travel.
The ranked community map highlights four small borough centers
The supplied ranked community map highlights Mifflintown, Port Royal, Thompsontown, and Mifflin. The printed values are Mifflintown 914, Port Royal 740, Thompsontown 515, and Mifflin 395. These are the ranking values used on the supplied graphic and should not be treated as the newest official population estimates.
Mifflintown and Mifflin sit close together near the middle of the county. Port Royal is southeast along the Juniata River side, while Thompsontown lies farther east. Their spacing shows how settlement follows a long river corridor rather than forming one continuous urban area.
The general map includes other places such as Mexico, McAlisterville, Richfield, and East Waterford, but those locations are not part of the four ranked points. For complete settlement geography, the community graphic is therefore best read together with the general map.
East Licking Creek and Tuscarora Creek define the southwestern valleys
East Licking Creek is one of the most prominent southwestern streams on the terrain-and-water map. It follows a long low corridor between parallel ridges. Blacklog Creek, Lick Run, and Willow Run occupy additional valleys nearby, giving this end of the county a strongly folded appearance.
Tuscarora Creek winds through the central-southwestern interior, with Doe Run joining the broader drainage network. The Tuscarora name is also associated with the valley and state forest lands in this part of central Pennsylvania, making the creek an important local geographic reference.
Farther north and northeast, Lost Creek, Little Lost Creek, and Cocolamus Creek cross lower terrain between the ridges. Stony Run is another labeled waterway toward the eastern side. Many smaller tributaries descend from the high ground and merge into the longer valley streams.
The map also labels the Pennsylvania Canal along the broader Juniata River corridor. Juniata County’s comprehensive plan notes that Indian trails, a turnpike, canal, railroad, and later roads made this valley an important trade and travel route. The supplied water map is for geographic reference rather than flood-zone, navigation, depth, or water-quality decisions.
Elevation ranges from about 117 to 678 meters
The supplied elevation map reports an actual range of roughly 117 to 678 meters and a mean near 262 meters. The lowest green terrain follows the Juniata River corridor and major tributary valleys. High brown ridges are especially prominent in the southwest and along the northwestern side.
The southwestern part of the county contains several nearly parallel mountain ridges. East Licking Creek and Blacklog Creek occupy lower passages between them, and East Waterford sits within this narrow valley environment. Roads must follow those lower corridors rather than cross every ridge directly.
The Mifflintown–Mifflin area is lower than the high southwestern country, although short hills still rise quickly outside the river corridor. Northeastern communities such as McAlisterville and Richfield occupy a mix of low valleys and surrounding ridges, producing a varied landscape rather than one broad plain.
This elevation surface is intended for county-wide comparison rather than survey-grade measurement. Parcel, construction, drainage, bridge, or engineering work requires authoritative source elevation data or professional surveying.
Juniata County was created in 1831 and named for the Juniata River
Juniata County’s comprehensive plan and the Pennsylvania State Archives state that the county was created on March 2, 1831 from part of Mifflin County. The county took its name from the Juniata River, and Mifflintown became the county seat.
The county plan notes that Mifflintown was laid out in 1791 and incorporated as a borough in 1833. Its central location remains clear on the modern map: major roads, the river corridor, and nearby boroughs all converge around the Mifflintown–Mifflin area.
The same county history describes the valley as a long-standing route for trade and travel. Historic Indian paths, the turnpike, canal, and railroad all followed the terrain rather than crossing the highest ridges directly. Modern highways still reflect that basic geographic logic.
Tuscarora State Forest reflects the county’s narrow valleys and steep ridges
Pennsylvania DCNR states that Tuscarora State Forest covers about 96,025 acres across Juniata and several neighboring counties. The forest lies within Pennsylvania’s Ridge and Valley region, where narrow valleys and steep, rocky ridges dominate the landscape.
DCNR also identifies two municipal watersheds within the state forest that supply Mifflin and Mifflintown. That connection shows how the forested uplands and headwater streams are tied directly to communities along the central Juniata corridor.
The East Waterford and Tuscarora Creek side of the county is a good place to see this landscape on the map. PA 75, PA 850, and smaller roads follow narrow valleys between higher ridges, while the elevation map shows rapid changes in height over short distances.
Port Royal and Thompsontown form small centers along the eastern river corridor
Port Royal lies southeast of Mifflintown close to the Juniata River and ranks second on the supplied community map with a printed value of 740. Thompsontown is farther east and ranks third at 515. Both are small borough centers rather than parts of a large continuous urban area.
From Thompsontown, local roads and PA 333 connect back toward the central county, while routes to the north lead toward McAlisterville and PA 35–235. The terrain is lower than the high southwestern ridges but remains broken by short hills and numerous tributaries.
Viewed together with Mifflintown and Mifflin, these eastern boroughs show the county’s dominant settlement pattern: several small centers spaced along the same river valley system, with ridges limiting development away from the low corridor.
McAlisterville, Richfield, and East Waterford occupy very different ends of the county
McAlisterville is an important northeastern reference served by PA 35 and PA 235. Richfield lies still farther northeast near the Snyder County side, where rural roads and smaller drainage valleys become more important than the central U.S. highway corridor.
East Waterford lies at the opposite southwestern end near PA 75. East Licking Creek and Blacklog Creek cross this region, and high ridges stand close to the valley floor. The result is a much narrower travel corridor than the broader river valley around Mifflintown.
Because Juniata County is elongated from southwest to northeast, the two ends are separated by several ridges and drainage systems. The general, water, and elevation maps together make that internal distance much easier to understand than the county outline alone.
Use the map that matches the question
The general reference map is the quickest choice for communities and highways. It places Mifflintown, Mifflin, Mexico, Thompsontown, McAlisterville, Richfield, East Waterford, U.S. 22, U.S. 322, PA 35, PA 74, PA 75, PA 235, PA 333, and PA 850 in one view. The ranked community map is cleaner when the goal is to compare the four highlighted boroughs.
The terrain-and-water map is more useful for East Licking Creek, Tuscarora Creek, Lost Creek, Little Lost Creek, Cocolamus Creek, and the historic Pennsylvania Canal corridor. The elevation map removes many labels and makes the low river valleys and high ridges especially easy to compare.
For printed handouts, classroom use, regional reference notes, or presentation slides, the A3 high-resolution JPG files in the download archive will remain sharper than enlarged web previews. Pairing the general and elevation maps works well for roads and relief, while the water map explains why so many local routes follow long, narrow valleys.
Frequently Asked Questions
What is the best place to start when locating areas in Juniata County?
Mifflintown is the easiest central reference because it sits close to Mifflin, the U.S. 22–322 corridor, and the Juniata River valley. Port Royal and Thompsontown are farther east, McAlisterville is northeast, and East Waterford lies in the southwestern mountain valleys.
Why does Juniata County have so many long, parallel ridges?
The county lies within Pennsylvania’s Ridge and Valley region. Pennsylvania DCNR describes Tuscarora State Forest as a landscape of narrow valleys and steep, rocky ridges, and the county elevation map shows the same pattern from the East Waterford side to the central river corridor.
Are the Mifflintown 914 and Port Royal 740 values current official population estimates?
Not necessarily. They are the ranking values printed on the supplied community graphic. Thompsontown 515 and Mifflin 395 should be treated the same way; readers who need current official population figures should consult the latest U.S. Census Bureau releases.
Map File Information
The download ZIP contains four A3 high-resolution JPG files: the Juniata County general reference map, ranked community map, terrain-and-water map, and elevation map. The original files are larger than the web previews and are better suited to printing, classroom handouts, regional reference work, and presentation slides.
- Included Files: Use only the versions confirmed in the article and supplied images
- File Type: Use the confirmed download contents
- Intended Use: Printing, education, presentations, and map-based projects
Related Maps
Sources and References
- Juniata County Comprehensive Plan – History of Juniata County: county formation, Mifflintown history, and the county’s long transportation corridor.
- Pennsylvania State Archives – County Courthouses: Juniata County creation date and Mifflintown county-seat reference.
- Pennsylvania DCNR – Tuscarora State Forest: official information on the Ridge and Valley terrain and forest lands within Juniata County.
- U.S. Census Bureau TIGER/Line Shapefiles: county boundaries and transportation geography.
- USGS National Hydrography: rivers and stream data.
- USGS 3D Elevation Program: elevation data and 3DEP documentation.
Green Map creates custom-edited map images using open geographic data sources such as geoBoundaries, Natural Earth, OpenStreetMap, and government open data. These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.
