CM1 · Chelmsford

CM1 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 1,440 postcodes across 7 sectors in Chelmsford.

Full fibre

Gigabit

92%

Superfast

97%

Postcodes

1,440

CM1 spans 1,440 postcodes across Chelmsford with strong gigabit reach at 91.5% and minimal slow-speed postcodes.

Broadband speeds in CM1

Share of CM1 premises by the fastest download speed available, averaged across all 1,440 postcodes in the district.

Cable gigabit networks serve 91.5% of postcodes. Speed distribution is excellent: 92% reach 300 Mbps or faster (a 0.5% over-delivery likely from neighbours' cable reach), 5.4% sit in the 30 to 300 Mbps band, and only 0.3% fall below 10 Mbps. Wireless at 1.8% fills rare gaps in coverage, most significant in fringe rural areas. Below-USO involves a single postcode only. Chelmsford's industrial and residential base has attracted sustained cable investment over years. The narrow slow-speed tail and high gigabit rate reflect cable monoculture rather than diverse fibre and copper patchwork. This consistency benefits property choosers: most postcodes offer similar speed options and competitive provider offerings regardless of neighbourhood.

Under 2 Mbps

<1%

2 to 5 Mbps

5 to 10 Mbps

<1%

10 to 30 Mbps

30 to 300 Mbps

300 Mbps and above

92%

Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.

Connectivity in detail

Below 10 Mbps USO

<1%

Premises unable to get the 10 Mbps universal service minimum

Fixed wireless

Premises that can use a fixed wireless access service

Broadband by sector

CM1 splits into 7 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.

Sector	Postcodes	Superfast	Full fibre	Gigabit
CM1 1	184	93%	0%	83%
CM1 2	253	100%	0%	98%
CM1 3	223	97%	0%	90%
CM1 4	312	96%	0%	90%
CM1 6	264	100%	0%	95%
CM1 7	203	96%	0%	91%
CM1 9	1	100%	TBC	100%

All CM1 1 postcodes (184)

CM1 1AE CM1 1AF CM1 1AG CM1 1AH CM1 1AN CM1 1AP CM1 1AQ CM1 1AU CM1 1AW CM1 1BD CM1 1BE CM1 1BS CM1 1BT CM1 1BY CM1 1DB CM1 1DD CM1 1DE CM1 1DG CM1 1DH CM1 1DL CM1 1DN CM1 1DR CM1 1DU CM1 1DW CM1 1DX CM1 1EA CM1 1EH CM1 1EJ CM1 1EL CM1 1EQ CM1 1ER CM1 1EW CM1 1FG CM1 1FH CM1 1FU CM1 1FW CM1 1FZ CM1 1GD CM1 1GF CM1 1GH CM1 1GJ CM1 1GL CM1 1GN CM1 1GP CM1 1GR CM1 1GS CM1 1GU CM1 1GZ CM1 1HF CM1 1HG CM1 1HH CM1 1HL CM1 1HR CM1 1HT CM1 1HU CM1 1HW CM1 1HX CM1 1HY CM1 1HZ CM1 1JA CM1 1JB CM1 1JF CM1 1JG CM1 1JL CM1 1JN CM1 1JP CM1 1JS CM1 1JU CM1 1JY CM1 1LA CM1 1LE CM1 1LG CM1 1LJ CM1 1LN CM1 1LQ CM1 1LR CM1 1LS CM1 1LU CM1 1LW CM1 1NE CM1 1NF CM1 1NH CM1 1NL CM1 1NP CM1 1NQ CM1 1NR CM1 1NS CM1 1NT CM1 1NU CM1 1NW CM1 1NX CM1 1NY CM1 1NZ CM1 1PA CM1 1PB CM1 1PE CM1 1PG CM1 1PH CM1 1PJ CM1 1PN CM1 1PP CM1 1PR CM1 1PT CM1 1PU CM1 1PX CM1 1PY CM1 1PZ CM1 1QA CM1 1QB CM1 1QD CM1 1QE CM1 1QF CM1 1QG CM1 1QH CM1 1QJ CM1 1QL CM1 1QN CM1 1QP CM1 1QQ CM1 1QS CM1 1QU CM1 1QY CM1 1QZ CM1 1RB CM1 1RE CM1 1RF CM1 1RG CM1 1RH CM1 1RJ CM1 1RL CM1 1RN CM1 1RP CM1 1RQ CM1 1RR CM1 1RS CM1 1RT CM1 1RU CM1 1RW CM1 1RX CM1 1RY CM1 1RZ CM1 1SA CM1 1SD CM1 1SE CM1 1SF CM1 1SH CM1 1SJ CM1 1SL CM1 1SN CM1 1SP CM1 1SQ CM1 1SR CM1 1SS CM1 1SU CM1 1SW CM1 1SY CM1 1TA CM1 1TB CM1 1TD CM1 1TE CM1 1TF CM1 1TG CM1 1TH CM1 1TN CM1 1TP CM1 1TQ CM1 1TR CM1 1TS CM1 1TW CM1 1TY CM1 1UE CM1 1UP CM1 1UQ CM1 1WZ CM1 1XA CM1 1XB CM1 1XD CM1 1XE CM1 1XF CM1 1XG CM1 1XL CM1 1XR CM1 1XU CM1 1YQ

All CM1 2 postcodes (253)

CM1 2AA CM1 2AB CM1 2AD CM1 2AE CM1 2AF CM1 2AG CM1 2AH CM1 2AJ CM1 2AL CM1 2AN CM1 2AP CM1 2AQ CM1 2AR CM1 2AS CM1 2AT CM1 2AW CM1 2BA CM1 2BB CM1 2BD CM1 2BE CM1 2BG CM1 2BH CM1 2BN CM1 2BP CM1 2BQ CM1 2BS CM1 2BT CM1 2BU CM1 2BW CM1 2BX CM1 2BY CM1 2BZ CM1 2DA CM1 2DB CM1 2DD CM1 2DE CM1 2DF CM1 2DG CM1 2DJ CM1 2DL CM1 2DN CM1 2DP CM1 2DR CM1 2DT CM1 2DU CM1 2DW CM1 2DX CM1 2DY CM1 2DZ CM1 2EA CM1 2EB CM1 2ED CM1 2EE CM1 2EF CM1 2EG CM1 2EH CM1 2EJ CM1 2EL CM1 2EN CM1 2EP CM1 2EQ CM1 2ER CM1 2ES CM1 2ET CM1 2EU CM1 2EW CM1 2EX CM1 2EY CM1 2EZ CM1 2FN CM1 2FQ CM1 2FU CM1 2FY CM1 2FZ CM1 2GA CM1 2GB CM1 2GD CM1 2GE CM1 2GF CM1 2GG CM1 2GH CM1 2GJ CM1 2GL CM1 2GN CM1 2GQ CM1 2GR CM1 2HA CM1 2HB CM1 2HD CM1 2HE CM1 2HF CM1 2HG CM1 2HH CM1 2HJ CM1 2HL CM1 2HN CM1 2HP CM1 2HQ CM1 2HR CM1 2HS CM1 2HW CM1 2JA CM1 2JB CM1 2JD CM1 2JE CM1 2JF CM1 2JG CM1 2JH CM1 2JJ CM1 2JL CM1 2JN CM1 2JP CM1 2JQ CM1 2JR CM1 2JS CM1 2JW CM1 2JX CM1 2JY CM1 2JZ CM1 2LA CM1 2LB CM1 2LD CM1 2LE CM1 2LF CM1 2LG CM1 2LH CM1 2LJ CM1 2LL CM1 2LN CM1 2LP CM1 2LQ CM1 2LR CM1 2LU CM1 2LW CM1 2LX CM1 2LY CM1 2NB CM1 2ND CM1 2NE CM1 2NF CM1 2NG CM1 2NH CM1 2NJ CM1 2NL CM1 2NN CM1 2NP CM1 2NQ CM1 2NR CM1 2NS CM1 2NT CM1 2NX CM1 2PA CM1 2PB CM1 2PD CM1 2PE CM1 2PF CM1 2PJ CM1 2PL CM1 2PN CM1 2PP CM1 2PR CM1 2PT CM1 2PU CM1 2PW CM1 2PZ CM1 2QA CM1 2QD CM1 2QE CM1 2QF CM1 2QH CM1 2QJ CM1 2QL CM1 2QN CM1 2QP CM1 2QR CM1 2QS CM1 2QT CM1 2QU CM1 2QW CM1 2QX CM1 2QY CM1 2QZ CM1 2RA CM1 2RB CM1 2RD CM1 2RE CM1 2RF CM1 2RG CM1 2RH CM1 2RL CM1 2RN CM1 2RP CM1 2RQ CM1 2RR CM1 2RS CM1 2RX CM1 2RY CM1 2RZ CM1 2SA CM1 2SB CM1 2SD CM1 2SE CM1 2SJ CM1 2SL CM1 2SN CM1 2SP CM1 2SR CM1 2SS CM1 2ST CM1 2SU CM1 2SW CM1 2SX CM1 2SY CM1 2TE CM1 2TF CM1 2TG CM1 2TH CM1 2TJ CM1 2TL CM1 2TN CM1 2TP CM1 2TQ CM1 2TR CM1 2TS CM1 2TT CM1 2TU CM1 2TW CM1 2TX CM1 2TY CM1 2TZ CM1 2UA CM1 2UD CM1 2UP CM1 2UT CM1 2UY CM1 2UZ CM1 2WS CM1 2WT CM1 2WU CM1 2WW CM1 2XA CM1 2XB CM1 2XD CM1 2XH CM1 2XJ CM1 2XL CM1 2XN CM1 2XR CM1 2XS CM1 2XT CM1 2XU CM1 2XW CM1 2XX

All CM1 3 postcodes (223)

CM1 3AA CM1 3AE CM1 3AF CM1 3AG CM1 3AR CM1 3AT CM1 3AX CM1 3BB CM1 3BH CM1 3BJ CM1 3BL CM1 3BP CM1 3BS CM1 3BT CM1 3BU CM1 3BW CM1 3BX CM1 3BY CM1 3BZ CM1 3DA CM1 3DB CM1 3DD CM1 3DE CM1 3DF CM1 3DG CM1 3DH CM1 3DJ CM1 3DL CM1 3DN CM1 3DP CM1 3DQ CM1 3DR CM1 3DS CM1 3DT CM1 3DU CM1 3DX CM1 3DY CM1 3DZ CM1 3EA CM1 3EB CM1 3ED CM1 3EE CM1 3EF CM1 3EG CM1 3EH CM1 3EJ CM1 3EL CM1 3EN CM1 3EP CM1 3EQ CM1 3ES CM1 3ET CM1 3EU CM1 3EW CM1 3EX CM1 3EY CM1 3EZ CM1 3FD CM1 3FF CM1 3FH CM1 3FJ CM1 3FL CM1 3FN CM1 3GA CM1 3GD CM1 3GF CM1 3GG CM1 3GH CM1 3GJ CM1 3GL CM1 3GN CM1 3GP CM1 3GR CM1 3GS CM1 3GU CM1 3GW CM1 3GY CM1 3GZ CM1 3HB CM1 3HD CM1 3HE CM1 3HF CM1 3HG CM1 3HH CM1 3HJ CM1 3HL CM1 3HN CM1 3HP CM1 3HQ CM1 3HR CM1 3HS CM1 3HT CM1 3HW CM1 3HY CM1 3HZ CM1 3JA CM1 3JB CM1 3JD CM1 3JE CM1 3JF CM1 3JG CM1 3JH CM1 3JJ CM1 3JL CM1 3JN CM1 3JP CM1 3JQ CM1 3JR CM1 3JS CM1 3JT CM1 3JU CM1 3JW CM1 3JX CM1 3JY CM1 3JZ CM1 3LE CM1 3LF CM1 3LG CM1 3LH CM1 3LJ CM1 3LL CM1 3LN CM1 3LP CM1 3LQ CM1 3LR CM1 3LS CM1 3LT CM1 3LW CM1 3LY CM1 3NA CM1 3NB CM1 3ND CM1 3NE CM1 3NF CM1 3NG CM1 3NH CM1 3NJ CM1 3NL CM1 3NN CM1 3NP CM1 3NQ CM1 3NR CM1 3NS CM1 3NT CM1 3NU CM1 3NW CM1 3NX CM1 3NY CM1 3NZ CM1 3PA CM1 3PB CM1 3PD CM1 3PE CM1 3PF CM1 3PH CM1 3PJ CM1 3PN CM1 3PQ CM1 3PR CM1 3PS CM1 3PU CM1 3PW CM1 3PX CM1 3PZ CM1 3QD CM1 3QE CM1 3QF CM1 3QG CM1 3QH CM1 3QJ CM1 3QL CM1 3QP CM1 3QR CM1 3QS CM1 3QT CM1 3QU CM1 3QW CM1 3QY CM1 3QZ CM1 3RA CM1 3RB CM1 3RD CM1 3RE CM1 3RF CM1 3RG CM1 3RH CM1 3RL CM1 3RN CM1 3RP CM1 3RQ CM1 3RR CM1 3RS CM1 3RT CM1 3RU CM1 3RW CM1 3RY CM1 3RZ CM1 3SA CM1 3SB CM1 3SD CM1 3SE CM1 3SF CM1 3SG CM1 3SH CM1 3SJ CM1 3SL CM1 3SN CM1 3SP CM1 3SQ CM1 3SR CM1 3SS CM1 3ST CM1 3SU CM1 3SX CM1 3TF CM1 3TH CM1 3UB CM1 3US CM1 3WQ CM1 3WR CM1 3WS CM1 3WT CM1 3YA

All CM1 4 postcodes (312)

CM1 4AA CM1 4AB CM1 4AD CM1 4AE CM1 4AF CM1 4AG CM1 4AH CM1 4AJ CM1 4AL CM1 4AN CM1 4AP CM1 4AQ CM1 4AR CM1 4AS CM1 4AT CM1 4AU CM1 4AW CM1 4AX CM1 4AY CM1 4AZ CM1 4BA CM1 4BB CM1 4BD CM1 4BH CM1 4BJ CM1 4BL CM1 4BN CM1 4BP CM1 4BS CM1 4BT CM1 4BU CM1 4BW CM1 4BX CM1 4BY CM1 4BZ CM1 4DA CM1 4DB CM1 4DD CM1 4DE CM1 4DF CM1 4DG CM1 4DH CM1 4DL CM1 4DN CM1 4DP CM1 4DQ CM1 4DU CM1 4DX CM1 4DY CM1 4DZ CM1 4EA CM1 4EB CM1 4ED CM1 4EE CM1 4EF CM1 4EG CM1 4EH CM1 4EJ CM1 4EL CM1 4EP CM1 4EQ CM1 4ES CM1 4ET CM1 4EU CM1 4EX CM1 4EY CM1 4EZ CM1 4FB CM1 4FD CM1 4FF CM1 4FG CM1 4FH CM1 4FJ CM1 4FL CM1 4FN CM1 4FP CM1 4FQ CM1 4FR CM1 4FS CM1 4FT CM1 4FU CM1 4FW CM1 4FX CM1 4FY CM1 4FZ CM1 4GA CM1 4GD CM1 4GE CM1 4GF CM1 4GH CM1 4GJ CM1 4GP CM1 4GQ CM1 4GR CM1 4GS CM1 4HA CM1 4HB CM1 4HD CM1 4HE CM1 4HF CM1 4HG CM1 4HH CM1 4HJ CM1 4HL CM1 4HN CM1 4HP CM1 4HR CM1 4HS CM1 4HT CM1 4HW CM1 4HX CM1 4HY CM1 4HZ CM1 4JB CM1 4JD CM1 4JE CM1 4JF CM1 4JG CM1 4JH CM1 4JJ CM1 4JL CM1 4JN CM1 4JP CM1 4JQ CM1 4JR CM1 4JS CM1 4JT CM1 4JU CM1 4JW CM1 4JX CM1 4JY CM1 4LA CM1 4LB CM1 4LD CM1 4LE CM1 4LF CM1 4LG CM1 4LH CM1 4LJ CM1 4LL CM1 4LN CM1 4LP CM1 4LQ CM1 4LR CM1 4LS CM1 4LT CM1 4LU CM1 4LW CM1 4LX CM1 4LY CM1 4LZ CM1 4NA CM1 4NB CM1 4NE CM1 4NF CM1 4NG CM1 4NH CM1 4NJ CM1 4NL CM1 4NN CM1 4NP CM1 4NQ CM1 4NR CM1 4NS CM1 4NT CM1 4NU CM1 4NW CM1 4NX CM1 4NY CM1 4NZ CM1 4PA CM1 4PB CM1 4PD CM1 4PE CM1 4PF CM1 4PG CM1 4PH CM1 4PP CM1 4PQ CM1 4PR CM1 4PS CM1 4PT CM1 4PU CM1 4PX CM1 4PY CM1 4PZ CM1 4QA CM1 4QB CM1 4QD CM1 4QH CM1 4QJ CM1 4QL CM1 4QN CM1 4QP CM1 4QQ CM1 4QR CM1 4QS CM1 4QT CM1 4QU CM1 4QW CM1 4QX CM1 4QY CM1 4QZ CM1 4RA CM1 4RB CM1 4RD CM1 4RE CM1 4RG CM1 4RH CM1 4RL CM1 4RN CM1 4RP CM1 4RQ CM1 4RR CM1 4RS CM1 4RT CM1 4RU CM1 4RW CM1 4RX CM1 4RY CM1 4RZ CM1 4SA CM1 4SB CM1 4SD CM1 4SE CM1 4SF CM1 4SG CM1 4SH CM1 4SJ CM1 4SL CM1 4SQ CM1 4SS CM1 4ST CM1 4SU CM1 4SX CM1 4SY CM1 4SZ CM1 4TA CM1 4TB CM1 4TD CM1 4TE CM1 4TF CM1 4TG CM1 4TJ CM1 4TL CM1 4TN CM1 4TP CM1 4TQ CM1 4TR CM1 4TS CM1 4TT CM1 4TW CM1 4TX CM1 4TY CM1 4TZ CM1 4UA CM1 4UB CM1 4UE CM1 4UF CM1 4UG CM1 4UH CM1 4UJ CM1 4UL CM1 4UN CM1 4UP CM1 4UQ CM1 4UR CM1 4US CM1 4UT CM1 4UU CM1 4UW CM1 4UX CM1 4UY CM1 4UZ CM1 4WA CM1 4WB CM1 4WD CM1 4WF CM1 4WG CM1 4WH CM1 4WT CM1 4XA CM1 4XB CM1 4XD CM1 4XE CM1 4XG CM1 4XH CM1 4XL CM1 4XN CM1 4XQ CM1 4XR CM1 4XS CM1 4XT CM1 4XU CM1 4XW CM1 4XX CM1 4XY CM1 4XZ CM1 4YA CM1 4YB CM1 4YD CM1 4YE CM1 4YF CM1 4YG CM1 4YJ CM1 4YL CM1 4YP CM1 4YQ CM1 4YR CM1 4YT CM1 4YY CM1 4ZB

All CM1 6 postcodes (264)

CM1 6AF CM1 6AG CM1 6AH CM1 6AJ CM1 6AL CM1 6AN CM1 6AP CM1 6AQ CM1 6AR CM1 6AS CM1 6AT CM1 6AU CM1 6AX CM1 6AY CM1 6AZ CM1 6BA CM1 6BB CM1 6BD CM1 6BE CM1 6BF CM1 6BG CM1 6BH CM1 6BJ CM1 6BL CM1 6BN CM1 6BP CM1 6BQ CM1 6BS CM1 6BT CM1 6BU CM1 6BW CM1 6BX CM1 6BY CM1 6BZ CM1 6DA CM1 6DB CM1 6DD CM1 6DE CM1 6DF CM1 6DG CM1 6DJ CM1 6DL CM1 6DN CM1 6DP CM1 6DQ CM1 6DR CM1 6DS CM1 6DT CM1 6DU CM1 6DW CM1 6DY CM1 6EA CM1 6EB CM1 6ED CM1 6EE CM1 6EF CM1 6EG CM1 6EH CM1 6EJ CM1 6EL CM1 6EN CM1 6EP CM1 6EQ CM1 6ER CM1 6ET CM1 6EU CM1 6EY CM1 6EZ CM1 6FA CM1 6FB CM1 6FD CM1 6FE CM1 6FF CM1 6FG CM1 6FH CM1 6FJ CM1 6FL CM1 6FN CM1 6FP CM1 6FQ CM1 6FR CM1 6FS CM1 6FT CM1 6FU CM1 6FW CM1 6FX CM1 6FY CM1 6GA CM1 6GB CM1 6GD CM1 6GE CM1 6GF CM1 6GG CM1 6GH CM1 6GJ CM1 6GL CM1 6GN CM1 6GP CM1 6GQ CM1 6GR CM1 6GT CM1 6GU CM1 6GW CM1 6GX CM1 6GY CM1 6GZ CM1 6HA CM1 6HD CM1 6HF CM1 6HG CM1 6HH CM1 6HJ CM1 6HN CM1 6HP CM1 6HQ CM1 6HR CM1 6HS CM1 6HT CM1 6HU CM1 6HW CM1 6HX CM1 6HY CM1 6HZ CM1 6JA CM1 6JB CM1 6JD CM1 6JE CM1 6JF CM1 6JG CM1 6JH CM1 6JJ CM1 6JL CM1 6JN CM1 6JP CM1 6JQ CM1 6JR CM1 6JS CM1 6JT CM1 6JU CM1 6JW CM1 6JX CM1 6JY CM1 6JZ CM1 6LA CM1 6LB CM1 6LD CM1 6LE CM1 6LF CM1 6LH CM1 6LJ CM1 6LL CM1 6LN CM1 6LP CM1 6LR CM1 6LS CM1 6LT CM1 6LU CM1 6LW CM1 6LX CM1 6LY CM1 6LZ CM1 6NA CM1 6NB CM1 6ND CM1 6NE CM1 6NF CM1 6NG CM1 6NH CM1 6NL CM1 6NN CM1 6NP CM1 6NR CM1 6NS CM1 6NT CM1 6NU CM1 6NW CM1 6PJ CM1 6PR CM1 6PS CM1 6QR CM1 6QS CM1 6QT CM1 6QU CM1 6QX CM1 6QY CM1 6QZ CM1 6SS CM1 6ST CM1 6SU CM1 6SX CM1 6SY CM1 6SZ CM1 6TA CM1 6TB CM1 6TD CM1 6TL CM1 6TN CM1 6TR CM1 6TS CM1 6TT CM1 6TU CM1 6TW CM1 6TX CM1 6TY CM1 6TZ CM1 6UA CM1 6UB CM1 6UD CM1 6UE CM1 6UG CM1 6UH CM1 6UJ CM1 6UL CM1 6UN CM1 6UP CM1 6UQ CM1 6UR CM1 6UT CM1 6UU CM1 6UW CM1 6UX CM1 6UY CM1 6WP CM1 6XA CM1 6XB CM1 6XD CM1 6XE CM1 6XF CM1 6XG CM1 6XH CM1 6XJ CM1 6XL CM1 6XN CM1 6XP CM1 6XQ CM1 6XR CM1 6XS CM1 6XT CM1 6XU CM1 6XW CM1 6XX CM1 6XY CM1 6XZ CM1 6YD CM1 6YE CM1 6YF CM1 6YG CM1 6YH CM1 6YJ CM1 6YL CM1 6YN CM1 6YP CM1 6YQ CM1 6YR CM1 6YS CM1 6YT CM1 6YU CM1 6YW CM1 6YX CM1 6ZE CM1 6ZF CM1 6ZG CM1 6ZP CM1 6ZQ

All CM1 7 postcodes (203)

CM1 7AA CM1 7AB CM1 7AD CM1 7AE CM1 7AF CM1 7AG CM1 7AH CM1 7AJ CM1 7AL CM1 7AN CM1 7AP CM1 7AQ CM1 7AR CM1 7AS CM1 7AT CM1 7AU CM1 7AW CM1 7AX CM1 7AY CM1 7AZ CM1 7BA CM1 7BB CM1 7BD CM1 7BE CM1 7BG CM1 7BH CM1 7BJ CM1 7BL CM1 7BN CM1 7BP CM1 7BQ CM1 7BT CM1 7BU CM1 7BW CM1 7BX CM1 7BY CM1 7BZ CM1 7DA CM1 7DB CM1 7DD CM1 7DE CM1 7DF CM1 7DG CM1 7DJ CM1 7DN CM1 7DP CM1 7DQ CM1 7DR CM1 7DS CM1 7DT CM1 7DU CM1 7DW CM1 7DX CM1 7DY CM1 7DZ CM1 7EA CM1 7EB CM1 7ED CM1 7EE CM1 7EF CM1 7EH CM1 7EJ CM1 7EN CM1 7EP CM1 7ER CM1 7ET CM1 7EU CM1 7EW CM1 7EX CM1 7EY CM1 7EZ CM1 7FA CM1 7FD CM1 7FE CM1 7FH CM1 7FL CM1 7FN CM1 7FP CM1 7FQ CM1 7FS CM1 7FT CM1 7FU CM1 7FW CM1 7FY CM1 7FZ CM1 7GB CM1 7GD CM1 7GE CM1 7GU CM1 7HA CM1 7HB CM1 7HD CM1 7HE CM1 7HF CM1 7HG CM1 7HH CM1 7HN CM1 7HP CM1 7HQ CM1 7HR CM1 7HS CM1 7HT CM1 7HU CM1 7HW CM1 7HX CM1 7HZ CM1 7JD CM1 7LE CM1 7LF CM1 7NS CM1 7NT CM1 7NU CM1 7NX CM1 7NY CM1 7NZ CM1 7PA CM1 7PB CM1 7PD CM1 7PE CM1 7PF CM1 7PG CM1 7PH CM1 7PJ CM1 7PL CM1 7PP CM1 7PT CM1 7PU CM1 7PX CM1 7PY CM1 7PZ CM1 7QA CM1 7QB CM1 7QD CM1 7QE CM1 7QF CM1 7QG CM1 7QH CM1 7QJ CM1 7QL CM1 7QN CM1 7QP CM1 7QQ CM1 7QR CM1 7QW CM1 7QY CM1 7QZ CM1 7RA CM1 7RB CM1 7RD CM1 7RE CM1 7RF CM1 7RG CM1 7RH CM1 7RJ CM1 7RL CM1 7RP CM1 7RR CM1 7RS CM1 7RT CM1 7RU CM1 7RW CM1 7RX CM1 7RY CM1 7RZ CM1 7SA CM1 7SB CM1 7SD CM1 7SE CM1 7SF CM1 7SG CM1 7SJ CM1 7SL CM1 7SN CM1 7SP CM1 7SQ CM1 7SR CM1 7SS CM1 7SW CM1 7SZ CM1 7TA CM1 7TB CM1 7TD CM1 7TE CM1 7TF CM1 7TG CM1 7TH CM1 7TJ CM1 7TN CM1 7TP CM1 7TQ CM1 7TR CM1 7TS CM1 7TT CM1 7TU CM1 7UF CM1 7WE CM1 7WS CM1 7WT CM1 7YA CM1 7YB CM1 7ZA CM1 7ZS CM1 7ZT

All CM1 9 postcodes (1)

CM1 9SU

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Living in Chelmsford

Chelmsford's industrial and residential base has attracted sustained cable investment. The narrow slow-speed tail and high gigabit rate reflect cable monoculture rather than diverse fibre/copper patchwork. This consistency benefits property choosers: most postcodes offer similar speed options.

Remote worker score

55/100

Connectivity and amenities for home working

Family score

50/100

Schools, safety and family amenities

Value score

50/100

What you get for the local price level

CM1 broadband FAQs

Is Chelmsford fully gigabit-connected?

Nearly: 91.5% of postcodes have gigabit cable. The remaining 8.5% reach superfast at 30 Mbps and above via fibre or older copper.

How many postcodes are slow?

Only 0.3% fall below 10 Mbps, making this extremely rare. The district is well-served.

What about industrial estates or business parks?

These are typically well-wired. Use the Checker for your specific address, as some commercial zones may have distinct providers.

Are upgrade plans ongoing?

The 8.5% non-gigabit postcodes are candidates for future fibre or cable expansion. Contact your provider for timelines.

Neighbouring districts

CM2

1,296 postcodes

98% superfast

CM4

417 postcodes

91% superfast

CM3

1,558 postcodes

94% superfast

CM12

489 postcodes

99% superfast

CM11

444 postcodes

96% superfast

CM8

890 postcodes

98% superfast

Check your exact postcode

Every postcode in CM1 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.

Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources