Professional Map Layout¶
Goal: Take a working map and turn it into a polished, ready-for-portfolio layout PDF.
→ Pair this with Layout Design (ArcGIS Pro) and Cartography (roadmap).
The 10-step recipe¶
1. Lock down the map first¶
Don't start the layout until your map is done. Symbology, labels, classification — finalize them. Layouts are about composition, not analysis.
2. Pick paper size and orientation¶
| Use | Size |
|---|---|
| Online viewing / portfolio | Letter (8.5×11) Landscape |
| One-pager / report | Letter Portrait |
| Wall poster | Tabloid (11×17) or A3 |
| Presentation slide | Custom 16:9 (10×5.625) |
Insert ribbon → New Layout → pick.
3. The grid¶
Use Guides (Layout ribbon → Guides) to set a 12-column grid:
- Margin: 0.5"
- Guides at 1.5", 3", 4.5", 6", 7.5", 9.5"
This gives you a structure to align everything.
4. The map frame¶
- Place a single map frame in the largest area (~70% of the page).
- Activate it. Zoom to your story extent. Close Activation.
- Lock the scale: with the frame selected, set Scale in the bottom-left explicitly.
5. Hierarchy with type¶
Title: 24–28 pt, bold, sans-serif
Subtitle: 12–14 pt, regular, italic
Section heads: 10 pt, bold, all caps
Body text: 9 pt, regular
Labels: 8–9 pt
Source line: 7–8 pt, gray
Use 1 sans-serif font (Inter, Source Sans, Open Sans). Maybe a serif for body text.
6. The 6 essentials¶
Insert each:
| Element | Position | Notes |
|---|---|---|
| Title | Top-left or top-center | Frames the question |
| Subtitle | Below title | Context, time period, source |
| Legend | Right column | Trim heading, round labels |
| Scale bar | Bottom-left of map | Stepped Scale Line 1 |
| North arrow | Top-right of map | Subtle |
| Source / projection / author | Bottom of page | 7–8 pt, gray |
7. Inset map (locator)¶
For a city / regional map, add a small state-level inset:
- Insert → Map Frame → small rectangle, top-right corner.
- Set its extent to the state.
- Add a rectangle showing the main map's extent.
- Right-click the inset frame → Properties → Extent → Linked to MainMap → Update.
Now the inset auto-updates if you reframe the main map.
8. Restraint¶
Less is more
A clean professional layout has:
- 1 main map (occasionally 2 for before/after)
- 1 inset
- 1 legend
- 1 title
- 0 unnecessary elements
Don't add a chart, table, photo, and 4 callouts unless each adds information the map alone can't.
9. Visual hierarchy¶
The viewer should look:
1. Title (largest, top-left)
2. Map content (center, biggest area)
3. Legend / scale (right side, medium)
4. Source / metadata (bottom, small)
Colors: most saturated on the data, muted on the basemap, neutral on the page.
10. Export¶
| Use | Format |
|---|---|
| Portfolio site | PDF (vector, 300 dpi), embed at 50% on retina |
| Slide | PNG, 150 dpi |
| PDF, 300 dpi, CMYK |
→ Detail: Exporting Maps.
A copy-paste source line¶
Data: U.S. Census ACS 5-year (2018–2022) · TIGER/Line 2022.
Projection: NAD83 / Conus Albers (EPSG:5070).
Map by [Your Name], 2026.
Drop this in the bottom-right at 7 pt, gray. Adjust to match your data.
Layout review checklist¶
Before you ship a layout, run through:
- Title answers a clear question
- All 6 elements present
- Legend matches the map exactly
- Scale bar attached to the map frame
- Source + projection cited
- No default font, no default symbology
- Color scheme matches data type
- Numbers in legend are rounded
- Inset map (if any) is visually distinct
- Padding around every element ≥ ⅛"
- Export at 300 dpi PDF + visually checked
If you can tick all 11, your map is ready for a portfolio.
Practice¶
Take an old map and redesign it
- Find a default-symbology map you've made.
- Apply this checklist.
- Export both versions.
- Side-by-side: which would you put on your portfolio?