Your local printer store most likely has special address labels you can customize. They most likely offer a discount if you buy in bulk. You can also choose the color of the lettering.
Address labels can be made on a home computer using Excel . They can also be sourced at many different printing companies both on-line and at local printing stores.
You can get free label printing software at www.avery.com. They offer this service in the hopes that you are using their labels, but you can use it with any labels of the same size as the templates.
You can purchase mailing address labels online at Vistaprint, Tiny Prints, Zazzle, Staples Copy and Print, and you can try your local printing businesses.
Return addresses are not required by the Postal Service. However, you can buy personalized labels from a number of venders including Vistaprint.com. When looking for return labels on the web, look for "address labels."
You can go to Office Depot and have labels made for you there that will be the size and design you choose as well as your personalization.
In researching this question I was bombarded with online companies that sell address labels, personalized or blank for home/office printing. Staples and other office supply stores also offer both options for those that prefer a face to face interaction.
There are a wide range of places online that you can shop for personalized address labels. One of the most common that I have found is a site called Vistaprint. Their pricing is very reasonable and affordable.
Most postal service companies such as UPS for example offer the printing label service. One can also shop mailing labels in many stationery stores such as Office depot.
Avery Lables makes software that can be downloaded from their website for printing labels. The make a windows version as well as a MAC version.
Almost any online store that does custom printing such as Vistaprint.com or printrunner.com can make labels that are customized down to the image and colors.
There are many places one can order custom return address labels including: Vistaprint, Zazzle and Shutterfly. Regular brick and mortar stores also have online options to order online like Staples. These sites allow one to also upload pictures. All of these sites will send the labels and have no option for printing them at home. There are products that have online support for creating labels and then printing them out at home. Avery is a good example of such a product. This can be purchased at Office Supply Stores, like Staples or Office Max. Often these stores have the ability to help you print your labels out too. Ask for help at the Service Desk or where the Copy Center is located.
Return address labels can be designed and printed through Shutterfly online. This site often runs promotions and offers free shipping often. A site from which you can design and print directly is Zazzle. You can also print labels from a home computer if you purchase Avery products. They offer blank adhesive address labels and are available wherever printing supplies can be purchased.