Suffolk publishes one inmate mailing address for both of its jails and it carries a Riverhead street, so a letter to someone at Glover Drive is addressed 20 miles away. Send letters and photos in minutes.
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Yaphank has no mailing address of its own. Suffolk County publishes a single inmate mail address covering both of its jails, and it sits at the Riverhead facility. That is counter-intuitive enough to be worth stating plainly before anything else, because an envelope addressed to Glover Drive is not following the county’s own instruction.
Write it exactly like this, whichever of the two jails your person is in:
C/O [Full Legal Name]
Suffolk County Correctional Facility
110 Center Drive South
Riverhead, NY 11901
Suffolk County publishes this as the inmate mailing address. Not a Riverhead address and a Yaphank address. One address, and it happens to be at Riverhead.
Where the name is a common one, the county advises adding a date of birth to the envelope so that mail reaches the right person.
Do not use 200 Glover Drive for post. That is where the Yaphank facility is and where you drive for a visit. It is not the published mailing address, and the county gives no alternative for Yaphank specifically.
One more number to keep straight: 100 Center Drive South is the facility itself and where bail is taken. 110 is the mail. They are one digit apart and they are different things.
Suffolk publishes a specific prohibited list:
The size limits are the ones that catch people. A standard photo print is fine. Anything enlarged is not.
What somebody may hold at any one time is capped, and it is worth knowing before you send a stack of anything:
| Item | Limit |
|---|---|
| Photographs, maximum five by seven | 15 |
| Paperback books | 5 |
| Magazines | 5 |
| Current newspapers | 2 |
| Prayer rug | 1 |
| Single layer black or white kuffi | 1 |
| Plain wedding band | 1 |
Clothing has its own rule, with no pockets and no drawstrings, in hunter green or white. The county defines hunter green in its own material by comparison to a New York Jets football jersey, which is an unusually helpful way to describe a colour on a corrections page.
Books, magazines and newspapers have to come direct from a publisher or a reputable online vendor, and the county names Amazon and Barnes and Noble as examples of the latter. That is broader than the publisher-only rule many jails use.
What changed, and the county says so plainly: items brought in by visitors or sent through the mail will no longer be accepted. So buying a paperback and posting it yourself does not work, even though ordering the same paperback to be shipped directly does.
Suffolk County names one electronic mail service and links it from its own site, under a portal titled for sending mail to the Suffolk County jail.
Published prices are 1 dollar 19 for a photograph and 60 cents per letter page. There are no refunds.
The mechanism is worth understanding because it is not what most New York counties do. This is a print-at-facility service rather than a scan-and-forward one: the vendor states its software delivers mail inside the facility without a scanning, photocopying or third party handling step, and photographs come out on real four by six photo paper. Your person receives paper rather than an image on a screen.
The fifteen photograph property cap still applies to anything sent this way.
What Pigeonly does. Pigeonly lets you write a letter or choose photos on your phone and we print and post them to Suffolk under the county’s own rules, with no printer, envelopes or stamps at your end, and no need to remember which of the two addresses is the mail one. It travels by post, which is the honest description: we are not printing inside the building the way the county’s own service does.
Suffolk County publishes nothing about how legal or certified mail is handled, for either jail. We checked the Sheriff’s full site index of 80 pages and it is not there.
If you are sending legal correspondence, 631-852-2241 is the number to confirm the procedure before you post anything time sensitive.
Two things families ask about, answered directly.
Mail is not routed to a scanning company. There is no digital mail processor in the chain, and no contract with one appears in county material. What you post goes to the county.
The address is not one of ours. 110 Center Drive South is Suffolk County’s own. Nothing about sending a letter here involves a detour through a processing centre in another state, and this guide makes no claim about saving transit time, because there is none to save.
6 of 9 questions
There is not one specific to Yaphank. Suffolk County publishes a single inmate mailing address covering both of its jails: care of the person's full name, Suffolk County Correctional Facility, 110 Center Drive South, Riverhead, NY 11901. Use it even though your person is at Glover Drive.
Mail & PhotosThat is the Yaphank facility's street address and where you go for a visit, but it is not the published mailing address and the county offers no Yaphank alternative. Use 110 Center Drive South in Riverhead. Note also that 100 Center Drive South is the facility and bail address, while 110 is the mail one.
Mail & PhotosNothing larger than five inches by seven. Polaroids are prohibited outright whatever their size, and cards may not exceed six by nine inches. Separately, a person may hold fifteen photographs in property at any one time, so a large batch can run into that cap even if each print is within the size limit.
Mail & PhotosCheck the envelope colour first. Suffolk accepts white envelopes only, which is an easy thing to get wrong with a coloured card or a decorated envelope. Other common causes are enclosed stamps or postage, stickers, or a photograph over five by seven.
Mail & PhotosOnly if it ships direct from a publisher or a reputable online vendor, and the county names Amazon and Barnes and Noble as examples. Buying a book and posting it yourself will not work, because the county states that items sent through the mail or brought by visitors are no longer accepted. Hardcover books need the cover removed, and the property cap is five paperbacks at a time.
Mail & PhotosClothing with no pockets and no drawstrings, in hunter green or white. The county describes hunter green by comparison to a New York Jets football jersey, which is a more useful definition than most agencies manage. Property also allows one prayer rug, one single layer black or white kuffi and one plain wedding band.
Mail & PhotosYes. Suffolk names one electronic mail service and links it from its own site, at 1 dollar 19 per photograph and 60 cents per letter page, with no refunds. It prints inside the facility rather than scanning, so photographs arrive as real four by six prints. The fifteen photograph property cap still applies.
Mail & PhotosNo third party scanning vendor is involved. Suffolk names no digital mail processor and no contract with one appears in county material, so what you post goes to the county directly. The electronic service the county does name prints inside the facility rather than scanning.
Mail & PhotosSuffolk County publishes nothing about it, for either jail. We checked the Sheriff's full 80 page site index and no legal or certified mail procedure appears. Before sending anything time sensitive, confirm the procedure on 631-852-2241.
Mail & PhotosMoney does not go in an envelope. Here is where it goes.
View ArticleA letter is one way to ask your person for the six digit number.
View ArticleThe mail address is the same either way, but the visit is not.
View ArticleQuicker than post while a letter is still travelling.
View ArticleSearch for your loved one and start sending photos, letters, and messages today.
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All information on this page comes directly from official government and facility sources. How we verify information › Last verified September 17, 2026. Official source: suffolkcountysheriffsoffice.com/inmate-mail-phone-and-resources ›