Look Up a ZIP Code™. ZIP Code Clear text field. Session Expiring. Due to inactivity, you will be signed out in: 2:00 minutes. Close Continue. Enter a tracking number Clear text field. Contact Us; Full Site; OK. ZIP Code Database. Immediate download. Offices close or the needs of the United States Postal Service change. The ZIP code radius lookup with our ZIP code. Find USPS ® Locations Near this Address; Get Shipping Prices for this Address. Current, Free ZIP Code Database: All US Zipcodes listed in database formats. Federalgovernmentzipcodes.us A Free Zip Code Database + Latitude and Longitude. DTS is available. EWTS is available. Allowances: Basic Allowance for Housing (BAH). ZIP Code Database. Immediately download the U.S. ZIP Code Database, licensed from the U.S. Postal Service, with free monthly updates. Geocoded ZIP Codes come with Population data, Area Code, Time Zone, FIPs, CBSA, Medicare, and 90+ other columns of data.
Zip codes and postal codes are numerical codes used to facilitate mail delivery, and area codes are used for specifying a geographical region when calling a phone number. Rather than flipping through a large, unwieldy telephone book, you can find and verify zip codes and area codes on the web quite easily.
If you have an address or partial address, you can find the zip code through USPS Zip Code Lookup, a tool on the US postal service's website. You can also search by city or state, or find all cities that are part of a particular zip code.
The story starts in 1831–well before the states were given codes–with that year's Table of Post Offices in the United States. The ZIP Code as a fast and easy.
The International Post Codes site, maintained by Columbia University, has an extensive index of domestic and international postal codes, in addition to mailing acronyms, policies, and best practices.
You can also use various search engines to find zip codes. With Google, for example, to do a zip code search by address, type what you know of the address to see a map of the location with the zip code included.
You can even type something like South Laurel MD zip code to see all of them for that area (and to find links that show a full list of zip codes for that region). You can also enter a zip code to see the geographic location it belongs to as well as a map and other related web results, such as cities that use that zip code.
If you don't append zip code to the end of the search, Google might show unrelated information. For example, a search for 90210 reveals information about the TV series, whereas 90210 zip code shows information on the zip code.
An example of creating a checkbox column is below: DataGridViewCheckBoxColumn col = new DataGridViewCheckBoxColumn() dataGridView1.Columns.Add(col); Without any more information on what determines your column types it is hard to give more advice, but you could easily use this technique with a DataTable, inspecting the type of each of its columns, or even using reflection over an object you are binding the datagridview to. You can't change the type of a DataGridView column after it is created but there is nothing to stop you creating columns as needed at run-time. How to edit gridview manually definition. So, depending on the logic the determines the type of each column, you create columns as needed and add them to the DataGridView.
You can find a zip code with DuckDuckGo, too. Type in a zip code and DuckDuckGo returns a map, the location of the zip code, weather, real estate, and other pertinent web results.
A zip code lookup on Bing brings back what city/locale it pertains to, maps, and local attractions, such as grocery stores, hotels, and movie theaters. If you type a partial address, Bing completes it for you and reveals the zip code.
Much like with a zip code, you can use a search engine to find an area code by searching for the city. To do the reverse and figure out what part of the country an area code is related to, just enter the area code into the search engine.
To find an area code with Google, type the name of the city and state you're looking for, followed by the words area code. You'll usually find what you need. For international listings, search for a phrase such as Kenya calling code, and you'll receive an informative answer with the numbers you'll need to make a call into that nation.
Enter the city and state in a new Bing search and you'll more than likely see Google-like results that show you the area code at the very top of the results. The same is true for international calling codes.
Another way to find an area code online is with Wolfram Alpha, which bills itself as 'Computational Intelligence.' Thisll get an instant result. Finding international codes isn't as easy with Yahoo as it is with Google, but you can, of course, still use Yahoo to find other websites that can give you that information.
Quite a few sites specialize in finding area codes that a simple search engine query might not reveal. You can use these free resources to find nearly any area code and/or country calling code in the world:
I'm new to SQL and relational databases and I have what I would imagine is a common problem.
Active portfolio management grinold kahn pdf converter. I'm making a website and when each user submits a post they have to provide a location in either a zip code or a City/State.
What is the best practice for handling this? Do I simply create a Zip Code and City and State table and query against them or are there ready made solutions for handling this?
I'm using SQL Server 2005 if it makes a difference.
I need to be able to retrieve a zip code given a city/state or I need to be able to spit out the city state given a zip code.
You have a couple options. You can buy a bulk zip-code library from somebody which will list zip codes, cities, counties, etc. by state, or you can pay someone to access a web service which will perform the same function on a more granular level.
Your best bet would be to go with the zip-code library option, as it'll cost you less than the web service and will provide better performance. How you query or pre-process this library is up to you. You mention SQL Server, so you'd probably want State, Zipcode, and City tables, and include the relevant relationships between them. You'll also need to have provisions for cities that span multiple zipcodes, or for zipcodes that have multiple cities - but none of these issues are insurmountable.
As far as dealing with the vagarities of user input, you may consider enlisting the help of an address validation web service, although most of them require a full shipping address in order to validate.
Edit: looks like there's a SourceForge project offering free zip-code data, including lat/lon data, etc. Not sure how correct or current it is.
Edit 2: After some cursory looking on that SourceForge project's site it looks like this is a dead project. If you use this data, you'll need to provide some allowance for zipcodes / cities that don't exist in your database. Purchased bulk libraries usually come with some sort of guarantee of updates, or a pricing plan for updates, etc., and are probably more reliable.
Erik ForbesErik ForbesHave a ZipCode table that is related to a CityState table. Some zip codes have multiple cities associated with them, so you may need to have the interface let the user select from the city they want or let them override the default.
I use the paid service from ZipInfo.com since I needed additional information such as lat/long, zip type and county. Zip codes also change several times as year as new zip codes are added or merged with others, so you will need to update your data a few times a year to stay consistent.
DavGarciaDavGarciaDepending on the details of what you're building, Yelp has a free neighborhoods API that may be able to get you what you need. Be sure to check their Terms of Use and stuff to make sure you stay in compliance.
I know this isn't a db centric answer, but what you're doing may not be best handled in the database itself.
Bramha GhoshBramha GhoshIf the reason for the lookup is the user's convenience, here's an alternate approach that doesn't require licensing any third-party databases:
Just lookup the city/state from your existing name/address table, provided the zip code matches. If somebody has previously made an entry for that zip code, then you'll find the city and state from that entry. IF no previous entry exists, then worst case the user has to entry in the city and state.
This solution assumes your need is for convenience for the user. If you are more concerned about accurate validation of city, state, zip codes then you're better off licensing a verified database.
KlugeKlugeThere are many free geo-coding webservices where you can get a zip from a city-state, and vice-versa. Take a look at the GeoNames webservice. You could do something like check your db, and then if what you are looking for is not there, grab it from the webservice and add it.
Muad'DibMuad'DibMy understanding is that the USPS web API is free to use, but requires permission that depends on a number of factors, including the nature of the program that will be using it and the reason you need the data.
If you qualify to use it, this would presumably be the most accurate source for the information you need.
Ben DunlapNot sure I understand the question. Do you need to allow either and, later, return both?
You'll have to be careful, even with a zip/city database that can be purchased, since some cities span multiple zips, so you can't always 'calculate' in that direction. Similar issue in the opposite direction.
alphadoggalphadoggThere are libraries that you can buy and import that aren't that expensive. Your problem with them is going to be that you will have an ongoing maintenance cost with it (not a lot). Zip codes change all the time, meaning that in 6 mos or so, your data will be slightly out of date. You might want to look at interfacing with a service like google maps. Here we use a hybrid approach. We spend the amount of the money for updates to the data every 6 months, and if the zip code isn't in the table we verify it against google maps to make sure that information entered is still valid and it just hasn't been entered into our system. If it is valid, we update the system, if not we let the user know that a mistake was made.
Another option would be to ping the USPS website. I believe they have a city/state look up page by zipcode.
kemiller2002kemiller2002For US States Tables, you can use following query, assuming you have StateId and StateName in the States table and you have StateId auto increment.
This query has 50 US States..
John SlegersI got that beat. Here's a free one (zipped, csv):
Headers are zip,city,state,latitude,longitude,timezone,dst
Now, your potential loss is that you aren't paying for updates (which can bite you in the end, but they try to keep it somewhat updated)
user54650user54650I would like to add this website.
You can download the data for free if you use for Personal/Educational (as of 2014-03-20).