寻求可本地集成的美国州及郡县列表下载源（JSON/.plist格式）

Hey there! I’ve got a few solid, legitimate sources to help you grab a complete, reliable list of US states and their counties—available in JSON format (easily convertible to PLIST) for local app integration:

Trusted Official Sources #

• US Census Bureau: This is the gold standard for authoritative US geographic data. They offer structured datasets that include state and county hierarchies, which you can export directly in JSON. Look for datasets under their Geographic Names Information System (GNIS) or American Community Survey (ACS) geographic data portals—you’ll find pre-organized lists with all the details you need (like FIPS codes, names, and boundaries if required).
• data.gov: The US federal government’s open data hub hosts multiple curated datasets of US states and counties. Search for terms like "US state county list JSON" to find ready-to-download files. All datasets here are publicly licensed for free use in most applications.

Community-Curated (But Verified) Options #

• GitHub Open Source Repos: Many developers maintain well-updated repos with pre-formatted JSON lists of US states and counties, often sourced directly from the Census Bureau to ensure accuracy. Look for repos with clear documentation and recent updates—you can download the JSON file directly and integrate it into your app immediately.

Converting JSON to PLIST #

If you specifically need PLIST format, converting JSON is straightforward:

• Command Line (macOS/Linux): Use the built-in plutil tool with this command:

  plutil -convert xml1 your-states-counties.json -o your-states-counties.plist
  

• Python Script: Use the json and plistlib libraries to convert programmatically:

  import json
  import plistlib
  
  with open('input.json', 'r') as f:
      data = json.load(f)
  
  with open('output.plist', 'wb') as f:
      plistlib.dump(data, f)
  

Just a quick note: Always prioritize official sources if your app relies on up-to-date, accurate geographic data—county boundaries can occasionally change, and official datasets will reflect those updates fastest.

内容的提问来源于stack exchange，提问作者Kalyan