Best mobile network in AL9 St Albans postcode district

According to Ofcom's December 2024 Connected Nations report, EE scores highest across St Albans. In this suburban area, EE achieves an overall coverage score of 88/100 — driven by strong 5G coverage (77%) and rock-solid 4G at 100%. 5G and 4G scores are closely matched, reflecting a mature, stable network.

EE noticeably leads Three by 9 points overall. While Three reaches 59% on 5G and 99% on 4G in St Albans, it falls short of EE's combined performance across all bands. O2 and Vodafone round out the field at 78 and 78 respectively.

EE has made solid 5G inroads across St Albans, reaching 77% of premises in AL9. While not blanket coverage, most streets and town centres are covered — and 4G fallback at 100% keeps reliability high throughout.

The runner-up in AL9 is Three at 79/100 (59% 5G / 99% 4G). The margin is noticeable but not enormous. EE edges ahead on 5G depth; if your plan is with Three, 4G performance should still be solid.