seodata.dev

keyword

zip code 4 digits

Monthly search volume and cost-per-click data for "zip code 4 digits" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=zip+code+4+digits&country=us" +--------------+------------------+ | volume | 1,600 | | cpc | $1.61 | | competition | 0 | | country | US | | updated | 2026-05-27 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
zip code plus 4 lookup 14,800 $0 20/20
plus 4 zip code 6,600 $0 20/20
zip code plus 4 6,600 $0 20/20
zip code 9 digits 5,400 $1.57 20/20
united states postal service zip code plus 4 4,400 $0.44 20/20
full zip code 3,600 $6.81 20/20
full zip codes 3,600 $11.49 20/20
what is my full zip code 3,600 $0 20/20
last 4 digits of zip code 2,900 $0 20/20
4 digit zip code extension lookup 2,400 $0 20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=zip+code+4+digits&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt